According to the versions of the python-urllib3 package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

    urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient     handling of large HTTP responses by reading the content in chunks, rather than loading the entire response     body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-     Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library     decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and     prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to     drain the connection and decompress the content unnecessarily. This decompression occurred even before any     read methods were called, and configured read limits did not restrict the amount of decompressed data. As     a result, there was no safeguard against decompression bombs. A malicious server could exploit this to     trigger excessive resource consumption on the client. Applications and libraries are affected when they     stream content from untrusted sources by setting `preload_content=False` when they do not disable     redirects. Users should upgrade to at least urllib3 v2.6.3, in which the library does not decode content     of redirect responses when `preload_content=False`. If upgrading is not immediately possible, disable     redirects by setting `redirect=False` for requests to untrusted source.(CVE-2026-21441)

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the     Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the     efficient handling of large HTTP responses by reading the content in chunks, rather than loading the     entire response body into memory at once. When streaming a compressed response, urllib3 can perform     decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd).
    The library must read compressed data from the network and decompress it until the requested chunk size is     met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for     the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of     highly compressed data in a single operation. This can result in excessive resource consumption (high CPU     usage and massive memory allocation for the decompressed data.(CVE-2025-66471)

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0,     the number of links in the decompression chain was unbounded allowing a malicious server to insert a     virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation     for the decompressed data. This vulnerability is fixed in 2.6.0.(CVE-2025-66418)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization python-urllib3 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 python-urllib3 package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.24 and prior to 2.6.0,     the number of links in the decompression chain was unbounded allowing a malicious server to insert a     virtually unlimited number of compression steps leading to high CPU usage and massive memory allocation     for the decompressed data. This vulnerability is fixed in 2.6.0.(CVE-2025-66418)

    urllib3 is a user-friendly HTTP client library for Python. Starting in version 1.0 and prior to 2.6.0, the     Streaming API improperly handles highly compressed data. urllib3's streaming API is designed for the     efficient handling of large HTTP responses by reading the content in chunks, rather than loading the     entire response body into memory at once. When streaming a compressed response, urllib3 can perform     decoding or decompression based on the HTTP Content-Encoding header (e.g., gzip, deflate, br, or zstd).
    The library must read compressed data from the network and decompress it until the requested chunk size is     met. Any resulting decompressed data that exceeds the requested amount is held in an internal buffer for     the next read operation. The decompression logic could cause urllib3 to fully decode a small amount of     highly compressed data in a single operation. This can result in excessive resource consumption (high CPU     usage and massive memory allocation for the decompressed data.(CVE-2025-66471)

Tenable has extracted the preceding description block directly from the EulerOS python-urllib3 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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:1241 advisory.

    The resource-agents packages provide the Pacemaker and RGManager service managers with a set of scripts.
    These scripts interface with several services to allow operating in a high-availability (HA) environment.

    Security Fix(es):

    * urllib3: urllib3: Unbounded decompression chain leads to resource exhaustion (CVE-2025-66418)

    * urllib3: urllib3 Streaming API improperly handles highly compressed data (CVE-2025-66471)

    * urllib3: urllib3 vulnerable to decompression-bomb safeguard bypass when following HTTP redirects     (streaming API) (CVE-2026-21441)

    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 AHV installed on the remote host is prior to AHV-10.0.1.9. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-10.0.1.9 advisory.

  - urllib3 is an HTTP client library for Python. urllib3's streaming API is designed for the efficient     handling of large HTTP responses by reading the content in chunks, rather than loading the entire response     body into memory at once. urllib3 can perform decoding or decompression based on the HTTP `Content-     Encoding` header (e.g., `gzip`, `deflate`, `br`, or `zstd`). When using the streaming API, the library     decompresses only the necessary bytes, enabling partial content consumption. Starting in version 1.22 and     prior to version 2.6.3, for HTTP redirect responses, the library would read the entire response body to     drain the connection and decompress the content unnecessarily. This decompression occurred even before any     read methods were called, and configured read limits did not restrict the amount of decompressed data. As     a result, there was no safeguard against decompression bombs. A malicious server could exploit this to     trigger excessive resource consumption on the client. Applications and libraries are affected when they     stream content from untrusted sources by setting `preload_content=False` when they do not disable     redirects. Users should upgrade to at least urllib3 v2.6.3, in which the library does not decode content     of redirect responses when `preload_content=False`. If upgrading is not immediately possible, disable     redirects by setting `redirect=False` for requests to untrusted source. (CVE-2026-21441)

  - Scrapy versions up to 2.13.2 are vulnerable to a denial of service (DoS) attack due to a flaw in its     brotli decompression implementation. The protection mechanism against decompression bombs fails to     mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available     memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data,     leading to excessive memory consumption during decompression. (CVE-2025-6176)

  - When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency     on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively     nested documents. (CVE-2025-12084)

  - The imaplib module, when passed a user-controlled command, can have additional commands injected using     newlines. Mitigation rejects commands containing control characters. (CVE-2025-15366)

  - The poplib module, when passed a user-controlled command, can have additional commands injected using     newlines. Mitigation rejects commands containing control characters. (CVE-2025-15367)

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
302553	EulerOS Virtualization 2.10.1 : python-urllib3 (EulerOS-SA-2026-1545)	Nessus	Huawei Local Security Checks	2026/3/16	2026/3/16	high
302604	EulerOS 2.0 SP11 : python-urllib3 (EulerOS-SA-2026-1591)	Nessus	Huawei Local Security Checks	2026/3/16	2026/3/16	high
306715	RHEL 8 : resource-agents (RHSA-2026:1241)	Nessus	Red Hat Local Security Checks	2026/4/16	2026/4/16	high
303853	Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-10.0.1.9)	Nessus	Misc.	2026/3/26	2026/3/26	high

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