The version of Tencent Linux installed on the remote TencentOS Server 3 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2026:0915 advisory.

    Package updates are available for TencentOS Server 3 that fix the following vulnerabilities:

    CVE-2025-66418:
    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-2025-66471:
    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-2026-21441:
    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.

Tenable has extracted the preceding description block directly from the Tencent 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 AOS installed on the remote host is prior to 7.0.1.15. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.0.1.15 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)

  - Allocation of resources for multipart headers with insufficient limits enabled a DoS vulnerability in     Apache Commons FileUpload. This issue affects Apache Commons FileUpload: from 1.0 before 1.6; from     2.0.0-M1 before 2.0.0-M4. Users are recommended to upgrade to versions 1.6 or 2.0.0-M4, which fix the     issue. (CVE-2025-48976)

  - A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte     usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils     utilities writing to the password database. (CVE-2025-14104)

  - 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)

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 Virtualization installation on the remote host is affected by the following vulnerabilities :

    urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable     redirects for all requests by instantiating a PoolManager and specifying retries in a way that disable     redirects. By default, requests and botocore users are not affected. An application attempting to mitigate     SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain     vulnerable. This issue has been patched in version 2.5.0.(CVE-2025-50181)

    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)

    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 an HTTP client library for Python. From 1.23 to before 2.7.0, cross-origin redirects followed     from the low-level API via ProxyManager.connection_from_url().urlopen(..., assert_same_host=False) still     forward these sensitive headers. This vulnerability is fixed in 2.7.0.(CVE-2026-44431)

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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
341140	TencentOS Server 3: resource-agents (TSSA-2026:0915)	Nessus	Tencent Local Security Checks	2026/8/27	2026/8/27	high
303428	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.0.1.15)	Nessus	Misc.	2026/3/24	2026/3/24	high
347192	EulerOS Virtualization 2.11.0 : python-urllib3 (EulerOS-SA-2026-3555)	Nessus	Huawei Local Security Checks	2026/9/18	2026/9/18	high

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