The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76128 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.13 on RHEL 7 serves as a replacement for Red Hat Single Sign-On     7.6.12, and includes bug fixes and enhancements, which are documented in the Release Notes document linked     to in the References.

    Security Fix(es):
    * undertow-core: Undertow MadeYouReset HTTP/2 DDoS Vulnerability (CVE-2025-9784)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Undertow HTTP Server Fails to Reject Malformed Host Headers Leading to Potential Cache Poisoning and     SSRF (CVE-2025-12543)
    * Information disclosure and data deletion via second-order SQL injection (CVE-2026-0603)
    * GOSTCTR implementation unable to process more than 255 blocks correctly (CVE-2025-14813)
    * PKIX draft CompositeVerifier accepts empty signature sequence as valid (CVE-2026-5588)
    * unbounded PGP AEAD chunk size leads to pre-auth resource exhaustion (CVE-2026-3505)
    * High integrity impact due to improper DNS domain name constraint enforcement (CVE-2026-42579)
    * HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers (CVE-2026-42581)
    * HTTP Header Injection via HttpProxyHandler Disabled Validation (CVE-2026-42578)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * Denial of Service via unbounded memory allocation in HTTP content decompression (CVE-2026-42587)
    * IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249)
    * Denial of Service via malformed HAProxy message (CVE-2026-44893)
    * Denial of Service due to resource leak (CVE-2026-48043)
    * Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol     headers (CVE-2026-48059)
    * Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)
    * Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010)
    * Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674)
    * Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)
    * Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512)
    * Denial of Service via deeply nested JSON processing (CVE-2026-50193)
    * Denial of Service via incomplete fix in async JSON parser (CVE-2026-68494)
    * Missing authentication on EAP's IIOP NameService leads to MITM or DoS (CVE-2026-15563)
    * Session fixation in OIDC login flow that can lead to account takeover (CVE-2026-7507)
    * Denial of Service via specially crafted SAML input (CVE-2026-7307)
    * Denial of Service due to excessive SAMLRequest decompression (CVE-2026-2575)
    * Denial of Service via excessive processing of OpenID Connect scope parameters (CVE-2026-4634)
    * Unauthorized access via improper validation of encrypted SAML assertions (CVE-2026-2092)

    For more details about the security issue(s), including the impact, a CVSS score, 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 remote Redhat Enterprise Linux 10 / 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:49700 advisory.

    Red Hat JBoss Enterprise Application Platform 8 is a platform for Java applications based on the WildFly     application runtime.

    This asynchronous patch is an update for Red Hat JBoss Enterprise Application Platform 8.1. See Release     Notes for information about the most significant bug fixes and enhancements included in this release.

    Security Fix(es):

    * netty-handler: Netty: Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416)

    * netty-resolver-dns: Netty: Information disclosure and data manipulation due to improper CNAME record     validation (CVE-2026-45674)

    * netty-handler: Netty: Improper trust manager handling leads to hostname verification bypass     (CVE-2026-50010)

    * netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691)

    * netty-handler: netty-handler: IPv6 subnet rule bypass due to incorrect masking operation     (CVE-2026-44249)

    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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
363386	RHEL 7 : Red Hat Single Sign-On 7.6.13 security update on RHEL 7 (Important) (RHSA-2026:76128)	Nessus	Red Hat Local Security Checks	2026/10/6	2026/10/21	critical
331717	RHEL 10 / 8 / 9 : Red Hat JBoss Enterprise Application Platform 8.1.7 (RHSA-2026:49700)	Nessus	Red Hat Local Security Checks	2026/8/3	2026/8/3	critical

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