The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2686-1 advisory.

    This update for apache2 fixes the following issues

    - CVE-2026-23918: http2: double free and possible RCE on early reset (bsc#1263957).
    - CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr (bsc#1263935).
    - CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via `ajp_msg_check_header()` (bsc#1264163).
    - CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976).
    - CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP response (bsc#1264150).
    - CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server crash via malicious requests     (bsc#1263956).
    - CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977).
    - CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest authentication (bsc#1263955).
    - CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows unauthenticated remote user to     crash a child       processes (bsc#1263954).
    - CVE-2026-33523: HTTP response splitting forwarding malicious status line (bsc#1263953).
    - CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
    - CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-termination check     (bsc#1263951).
    - CVE-2026-34059: heap buffer overread and memory disclosure via `ajp_parse_data()` (bsc#1263950).
    - CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978).
    - CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955).
    - CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956).
    - CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962).
    - CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963).
    - CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965).
    - CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969).
    - CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a     denial of       service (bsc#1267970).
    - CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971).
    - CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-     free       (bsc#1267972).
    - CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503).

    Non security issue:

    - Update to 2.4.66 (jsc#PED-16334).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and     untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. Users are recommended     to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-42536)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:42828 advisory.

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
      * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
      * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)
      * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
      * httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server     (CVE-2026-44186)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)
      * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)
      * httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)


    Bug Fix(es) and Enhancement(s):

      * mod_proxy_html regression in CVE-2026-34355 fix [almalinux-8.10.z] (JIRA:AlmaLinux-192751)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:41906 advisory.

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

    * Apache HTTP Server: mod_rewrite: Apache HTTP Server: Privilege Escalation via .htaccess file     manipulation (CVE-2026-24072)

    * httpd: mod_auth_digest: timing attack allows a bypass of digest authentication (CVE-2026-33006)

    * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

    * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)

    * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

    * httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server     (CVE-2026-44186)

    * httpd: Apache httpd mod_dav_fs: Denial of Service due to path handling issue (CVE-2026-42535)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)

    * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

    * httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)

    * httpd: Apache HTTP Server: Local .htaccess authors can read files with httpd user privileges     (CVE-2026-44119)

    Bug Fix(es) and Enhancement(s):

    * address Moderate severity issues from httpd 2.4.68 [rhel-9.8.z] (JIRA:Rocky Linux-184520)

    * mod_proxy_html regression in CVE-2026-34355 fix [rhel-9.8.z] (JIRA:Rocky Linux-192752)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-42828 advisory.

    - Resolves: RHEL-173558 - httpd:2.4/httpd: Apache HTTP Server mod_proxy_ajp:
      Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)
    - Resolves: RHEL-175074 - httpd:2.4/httpd: NULL pointer dereference can       cause a child process crash (CVE-2026-33007)
    - Resolves: RHEL-175088 - httpd:2.4/httpd: off-by-one out-of-bounds reads       in AJP getter functions (CVE-2026-33857)
    - Resolves: RHEL-175620 - httpd:2.4/httpd: NULL pointer dereference via       specially crafted request (CVE-2026-29169)
    - Resolves: RHEL-175055 - httpd: heap-based buffer over-read and memory       disclosure in ajp_parse_data() (CVE-2026-34059)
    - Resolves: RHEL-135054 - httpd: Apache HTTP Server: mod_userdir+suexec bypass       via AllowOverride FileInfo (CVE-2025-66200)
    - Resolves: RHEL-135039 - httpd: Apache HTTP Server: CGI environment variable       override (CVE-2025-65082)
    - Resolves: RHEL-134471 - httpd: Apache HTTP Server: Server Side Includes adds       query string to #exec cmd=... (CVE-2025-58098)
    - Resolves: RHEL-127073 - mod_ssl: allow more fine grained SSL SNI vhost check       to avoid unnecessary 421 errors after CVE-2025-23048 fix
    - Resolves: RHEL-99944 - CVE-2025-49812 httpd: HTTP Session Hijack via a TLS upgrade
    - Resolves: RHEL-99969 - CVE-2024-47252 httpd: insufficient escaping of       user-supplied data in mod_ssl
    - Resolves: RHEL-99961 - CVE-2025-23048 httpd: access control bypass by trusted       clients is possible using TLS 1.3 session resumption
    - Resolves: RHEL-46040 - httpd:2.4/httpd: Security issues via backend       applications whose response headers are malicious or exploitable (CVE-2024-38476)
    - Resolves: RHEL-53022 - Regression introduced by CVE-2024-38474 fix
    - Resolves: RHEL-45812 - httpd:2.4/httpd: Substitution encoding issue       in mod_rewrite (CVE-2024-38474)
    - Resolves: RHEL-45785 - httpd:2.4/httpd: Encoding problem in       mod_proxy (CVE-2024-38473)
    - Resolves: RHEL-45777 - httpd:2.4/httpd: Improper escaping of output       in mod_rewrite (CVE-2024-38475)
    - Resolves: RHEL-45758 - httpd:2.4/httpd: null pointer dereference       in mod_proxy (CVE-2024-38477)
    - Resolves: RHEL-45743 - httpd:2.4/httpd: Potential SSRF       in mod_rewrite (CVE-2024-39573)
    - Resolves: RHEL-31857 - httpd:2.4/httpd: HTTP response       splitting (CVE-2023-38709)

    mod_http2
    - Resolves: RHEL-191279 - mod_http2: Apache HTTP Server: Out-of-bounds       Read in mod_headers and mod_mime (CVE-2026-43951)
    - Resolves: RHEL-182418 - mod_http2: HTTP/2: Remote Denial of Service via       compression bomb and Slowloris-style attack (CVE-2026-49975)
    - Resolves: RHEL-166277 - httpd:2.4/httpd: Apache HTTP Server: HTTP/2 DoS by       Memory Increase (CVE-2025-53020)
    - Resolves: RHEL-105186 - httpd:2.4/httpd: untrusted input from a client causes       an assertion to fail in the Apache mod_proxy_http2 module (CVE-2025-49630)
    - Resolves: RHEL-58454 - mod_proxy_http2 failures after CVE-2024-38477 fix
    - Resolves: RHEL-29817 - httpd:2.4/mod_http2: httpd: CONTINUATION frames       DoS (CVE-2024-27316)
    - Resolves: RHEL-13367 - httpd:2.4/mod_http2: reset requests exhaust memory       (incomplete fix of CVE-2023-44487)(CVE-2023-45802)
    - Resolves: #2177748 - CVE-2023-25690 httpd:2.4/httpd: HTTP request splitting       with mod_rewrite and mod_proxy

    mod_md
    - Resolves: RHEL-134487 - httpd:2.4/httpd: Apache HTTP Server: mod_md (ACME),       unintended retry intervals (CVE-2025-55753)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:34109 advisory.

    The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

    Security Fix(es):

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)

    * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)

    * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)

    * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)

    * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)

    * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)

    Bug Fix(es) and Enhancement(s):

    * address Moderate severity issues from httpd 2.4.68 [rhel-10.2.z] (JIRA:RHEL-184518)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 7655baae-637d-11f1-8607-8447094a420f advisory.

    The Apache httpd project reports:
    See links for details.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the httpd packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    Improper Null Termination, Out-of-bounds Read vulnerability in Apache HTTP Server.This issue affects     Apache HTTP Server: through 2.4.66.Users are recommended to upgrade to version 2.4.67, which fixes the     issue.(CVE-2026-34032)

    A flaw was found in the `mod_dav_fs` module of Apache HTTP Server. A WebDAV (Web Distributed Authoring and     Versioning) content author could exploit a path handling issue to directly manipulate trusted DAV property     databases. This manipulation could potentially lead to child process crashes, resulting in a Denial of     Service (DoS).(CVE-2026-42535)

    Out-of-bounds Read vulnerability in mod_proxy_ajp of Apache HTTP Server.This issue affects Apache HTTP     Server: through 2.4.66.Users are recommended to upgrade to version 2.4.67, which fixes the     issue.(CVE-2026-33857)

    Buffer Over-read vulnerability in Apache HTTP Server.This issue affects Apache HTTP Server: through     2.4.66.Users are recommended to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-34059)

    Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and     untrusted content This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.Users are recommended     to upgrade to version 2.4.68, which fixes the issue.(CVE-2026-42536)

    Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled     OCSP server This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.Users are recommended to     upgrade to version 2.4.68, which fixes the issue.(CVE-2026-44185)

    Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the     configuration.This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.Users are recommended to     upgrade to version 2.4.68, which fixes the issue.(CVE-2026-44631)

    Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server.If mod_proxy_ajp connects     to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause     it to write 4 attacker controlled bytes after the end of a heap based buffer.This issue affects Apache     HTTP Server: through 2.4.66.Users are recommended to upgrade to version 2.4.67, which fixes the     issue.(CVE-2026-28780)

    HTTP response splitting vulnerability in multiple Apache HTTP Server modules with untrusted or compromised     backend servers.This issue affects Apache HTTP Server: from through 2.4.66.Users are recommended to     upgrade to version 2.4.67, which fixes the issue.(CVE-2026-33523)

    A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker     to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or     mod_dav_fs.The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than     version 1.2.0.Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove     mod_dav_lock.(CVE-2026-29169)

    Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local     .htaccess authors to read files with the privileges of the httpd user.This issue affects Apache HTTP     Server: from through 2.4.67.Users are recommended to upgrade to version 2.4.68, which fixes the     issue.(CVE-2026-44119)

    A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache     HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy     configuration.Users are recommended to upgrade to version 2.4.68, which fixes this issue.(CVE-2026-29170)

    Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and     ProxyPassReverseCookie* This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.Users are     recommended to upgrade to version 2.4.68, which fixes the issue.(CVE-2026-34356)

    A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest     authentication by a remote attacker.Users are recommended to upgrade to version 2.4.67, which fixes this     issue.(CVE-2026-33006)

    Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response     languages.This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.(CVE-2026-43951)

    Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache     HTTP Server with an attacker controlled backend FTP server.This issue affects undefined: from 2.4.0     through 2.4.67.Users are recommended to upgrade to version 2.4.68, which fixes the issue.(CVE-2026-44186)

    An escalation of privilege bug in various modules in Apache HTTP 2.4.66 and earlier allows local .htaccess     authors to read files with the privileges of the httpd user.Users are recommended to upgrade to version     2.4.67, which fixes this issue.(CVE-2026-24072)

    Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's   mod_md via     OCSP response data.This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.Users are recommended     to upgrade to version 2.4.67, which fixes the issue.(CVE-2026-29168)

    A NULL pointer dereference in the mod_authn_socache in Apache HTTP Server 2.4.66 and earlier allows an     unauthenticated remote user to crash a child process in a caching forward proxy configuration.Users are     recommended to upgrade to version 2.4.67, which fixes this issue.(CVE-2026-33007)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization httpd security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202608-05 (Apache HTTPD: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in Apache HTTPD. Please review the CVE identifiers     referenced below for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of httpd installed on the remote host is prior to 2.4.68-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3379 advisory.

    Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-29167)

    A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache     HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy     configuration.

    Users are recommended to upgrade to version 2.4.68, which fixes this issue. (CVE-2026-29170)

    A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an     untrusted backend.Users are recommended to upgrade to version 2.4.68, which fixes this issue.
    (CVE-2026-34355)

    Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and     ProxyPassReverseCookie*

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-34356)

    A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to     directly manipulate trusted DAV property databases, potentially causing child process crashes.

    Users are recommended to upgrade to version 2.4.68, which fixes this issue. (CVE-2026-42535)

    Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and     untrusted content

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-42536)

    Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response     languages.

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. (CVE-2026-43951)

    Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local     .htaccess authors to read files with the privileges of the httpd user.

    This issue affects Apache HTTP Server: from through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44119)

    Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled     OCSP server

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44185)

    Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache     HTTP Server with an attacker controlled backend FTP server.

    This issue affects undefined: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44186)

    Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration.

    This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

    Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44631)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:41906 advisory.

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
      * Apache HTTP Server: mod_rewrite: Apache HTTP Server: Privilege Escalation via .htaccess file     manipulation (CVE-2026-24072)
      * httpd: mod_auth_digest: timing attack allows a bypass of digest authentication (CVE-2026-33006)
      * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
      * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)
      * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
      * httpd: Apache HTTP Server: Denial of Service in mod_proxy_ftp via attacker-controlled FTP server     (CVE-2026-44186)
      * httpd: Apache httpd mod_dav_fs: Denial of Service due to path handling issue (CVE-2026-42535)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)
      * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)
      * httpd: Apache HTTP Server: Out-of-bounds Read in mod_headers and mod_mime (CVE-2026-43951)
      * httpd: Apache HTTP Server: Local .htaccess authors can read files with httpd user privileges     (CVE-2026-44119)


    Bug Fix(es) and Enhancement(s):

      * address Moderate severity issues from httpd 2.4.68 [almalinux-9.8.z] (JIRA:AlmaLinux-184520)
      * mod_proxy_html regression in CVE-2026-34355 fix [almalinux-9.8.z] (JIRA:AlmaLinux-192752)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8516-1 advisory.

    It was discovered that Apache HTTP Server's mod_ldap module incorrectly handled memory when processing     per-directory configurations. An attacker could use this issue to cause the server to crash, resulting in     a denial of service, or possibly execute arbitrary code. (CVE-2026-29167)

    It was discovered that Apache HTTP Server's mod_proxy_ftp module incorrectly handled HTML generation for     FTP directory listings. A remote attacker could possibly use this issue to inject arbitrary web script or     HTML. (CVE-2026-29170)

    It was discovered that Apache HTTP Server's mod_proxy_html module incorrectly handled certain content from     an untrusted backend. A remote attacker could possibly use this issue to cause Apache HTTP Server to     crash, resulting in a denial of service. (CVE-2026-34355)

    It was discovered that Apache HTTP Server incorrectly handled ProxyPassReverseCookie directives with a     malicious backend server. A remote attacker could possibly use this issue to cause Apache HTTP Server to     crash, resulting in a denial of service. (CVE-2026-34356)

    It was discovered that Apache HTTP Server's mod_dav_fs module incorrectly handled certain path operations.
    An authenticated user could possibly use this issue to manipulate trusted WebDAV property databases or     cause a denial of service. (CVE-2026-42535)

    It was discovered that Apache HTTP Server's mod_xml2enc module incorrectly handled certain content from an     untrusted backend. A remote attacker could possibly use this issue to cause Apache HTTP Server to crash,     resulting in a denial of service. (CVE-2026-42536)

    It was discovered that Apache HTTP Server incorrectly handled response headers when multiple content     languages were configured. A remote attacker could possibly use this issue to obtain sensitive     information. (CVE-2026-43951)

    It was discovered that Apache HTTP Server incorrectly restricted certain file functions in expressions     within .htaccess files. A local attacker with .htaccess write access could possibly use this issue to     obtain sensitive information. (CVE-2026-44119)

    It was discovered that Apache HTTP Server's mod_ssl module incorrectly handled OCSP responses from an     attacker-controlled server. A remote attacker could possibly use this issue to obtain sensitive     information or cause a denial of service. (CVE-2026-44185)

    It was discovered that Apache HTTP Server's mod_proxy_ftp module incorrectly handled responses from an     attacker-controlled backend FTP server. A remote attacker could possibly use this issue to cause Apache     HTTP Server to stop responding, resulting in a denial of service. (CVE-2026-44186)

    It was discovered that Apache HTTP Server incorrectly handled crafted regular expressions in the server     configuration. An attacker could possibly use this issue to execute arbitrary code or cause a denial of     service. (CVE-2026-44631)

    It was discovered that Apache HTTP Server's mod_http2 module had a use-after-free vulnerability when file     handles were exhausted. A remote attacker could possibly use this issue to cause Apache HTTP Server to     crash, resulting in a denial of service. (CVE-2026-48913)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21235-1 advisory.

    This update for apache2 fixes the following issues

    - CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976).
    - CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977).
    - CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978).
    - CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955).
    - CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956).
    - CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962).
    - CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963).
    - CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965).
    - CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969).
    - CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a     denial of       service (bsc#1267970).
    - CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971).
    - CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-     free       (bsc#1267972).
    - CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:34109 advisory.

    * httpd: incomplete fix for CVE-2023-38709 (CVE-2024-42516)
      * httpd: NULL pointer dereference via specially crafted request (CVE-2026-29169)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via malicious backend servers (CVE-2026-34356)
      * httpd: Apache HTTP Server: Buffer Over-read via outbound OCSP requests to attacker-controlled server     (CVE-2026-44185)
      * httpd: Apache HTTP Server: Denial of Service via crafted regular expressions (CVE-2026-44631)
      * httpd: Apache HTTP Server: Heap-based Buffer Overflow via untrusted content in mod_xml2enc     (CVE-2026-42536)
      * httpd: Apache HTTP Server: Buffer overflow in mod_proxy_html allows security bypass (CVE-2026-34355)


    Bug Fix(es) and Enhancement(s):

      * address Moderate severity issues from httpd 2.4.68 [almalinux-10.2.z] (JIRA:AlmaLinux-184518)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:2717-1 advisory.

    This update for apache2 fixes the following issues

    - CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976).
    - CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977).
    - CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978).
    - CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955).
    - CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956).
    - CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962).
    - CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963).
    - CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965).
    - CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969).
    - CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a     denial of       service (bsc#1267970).
    - CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971).
    - CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-     free       (bsc#1267972).
    - CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
324047	SUSE SLES15: apache2 / apache2-devel / apache2-doc / apache2-prefork / etc (SUSE-SU-2026:2686-1)	Nessus	SuSE Local Security Checks	2026/7/1	2026/7/1	high
319912	Linux Distros Unpatched Vulnerability : CVE-2026-42536	Nessus	Misc.	2026/6/9	2026/7/25	high
328975	AlmaLinux 8 : httpd:2.4 (ALSA-2026:42828)	Nessus	Alma Linux Local Security Checks	2026/7/22	2026/7/22	critical
329047	RockyLinux 9 : httpd (RLSA-2026:41906)	Nessus	Rocky Linux Local Security Checks	2026/7/22	2026/7/23	critical
329258	Oracle Linux 8 : httpd:2.4 (ELSA-2026-42828)	Nessus	Oracle Linux Local Security Checks	2026/7/23	2026/7/23	critical
324571	RHEL 10 : httpd (RHSA-2026:34109)	Nessus	Red Hat Local Security Checks	2026/7/1	2026/7/8	critical
320010	FreeBSD : Apache httpd -- Multiple vulnerabilities (7655baae-637d-11f1-8607-8447094a420f)	Nessus	FreeBSD Local Security Checks	2026/6/9	2026/6/12	critical
339284	EulerOS Virtualization 2.13.1 : httpd (EulerOS-SA-2026-3175)	Nessus	Huawei Local Security Checks	2026/8/25	2026/8/25	critical
335265	GLSA-202608-05 : Apache HTTPD: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	2026/8/13	2026/8/17	high
322004	Amazon Linux 2 : httpd, --advisory ALAS2-2026-3379 (ALAS-2026-3379)	Nessus	Amazon Linux Local Security Checks	2026/6/22	2026/6/22	critical
328786	AlmaLinux 9 : httpd (ALSA-2026:41906)	Nessus	Alma Linux Local Security Checks	2026/7/21	2026/7/21	critical
325960	Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Apache HTTP Server vulnerabilities (USN-8516-1)	Nessus	Ubuntu Local Security Checks	2026/7/9	2026/7/9	critical
326020	openSUSE 16: apache2 / apache2-devel / apache2-event / apache2-manual / etc (openSUSE-SU-2026:21235-1)	Nessus	SuSE Local Security Checks	2026/7/9	2026/7/9	high
324590	AlmaLinux 10 : httpd (ALSA-2026:34109)	Nessus	Alma Linux Local Security Checks	2026/7/1	2026/7/1	critical
324837	SUSE SLES12: apache2 / apache2-devel / apache2-doc / apache2-example-pages / etc (SUSE-SU-2026:2717-1)	Nessus	SuSE Local Security Checks	2026/7/2	2026/7/2	high

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