{ "document": { "aggregate_severity": { "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "TuxCare License Agreement", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.", "title": "Terms of Use" }, { "category": "details", "text": "CVE-2025-66471: fix unbounded decompression of HTTP responses in bundled\n urllib3", "title": "Details" } ], "publisher": { "category": "vendor", "contact_details": "https://tuxcare.com/contact/", "name": "TuxCare", "namespace": "https://tuxcare.com/" }, "references": [ { "category": "self", "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792151379", "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792151379" }, { "category": "self", "summary": "Canonical URL", "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.8esu/advisories/2026/clsa-2026_1792151379.json" } ], "tracking": { "current_release_date": "2026-10-16T11:50:19Z", "generator": { "date": "2026-10-16T11:50:19Z", "engine": { "name": "pyCSAF" } }, "id": "CLSA-2026:1792151379", "initial_release_date": "2026-10-16T11:50:19Z", "revision_history": [ { "date": "2026-10-16T11:50:19Z", "number": "1", "summary": "Initial version" } ], "status": "final", "version": "1" }, "title": "python3.11-pip: Fix of CVE-2025-66471" }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_name", "name": "AlmaLinux 9.8", "product": { "name": "AlmaLinux 9.8", "product_id": "AlmaLinux-9.8", "product_identification_helper": { "cpe": "cpe:2.3:o:almalinux:almalinux:9.8:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "AlmaLinux" } ], "category": "vendor", "name": "AlmaLinux OS Foundation" }, { "branches": [ { "branches": [ { "category": "product_name", "name": "Rocky Linux 9.8", "product": { "name": "Rocky Linux 9.8", "product_id": "Rocky Linux-9.8", "product_identification_helper": { "cpe": "cpe:2.3:o:resf:rocky_linux:9.8:*:*:*:*:*:*:*" } } } ], "category": "product_family", "name": "Rocky Linux" } ], "category": "vendor", "name": "Rocky Linux" }, { "branches": [ { "branches": [ { "category": "product_version", "name": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "product": { "name": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "product_id": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/python3.11-pip-wheel@22.3.1-6.el9.tuxcare.els1?arch=noarch" } } }, { "category": "product_version", "name": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "product": { "name": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "product_id": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "product_identification_helper": { "purl": "pkg:rpm/tuxcare/python3.11-pip@22.3.1-6.el9.tuxcare.els1?arch=noarch" } } } ], "category": "architecture", "name": "noarch" } ], "category": "vendor", "name": "TuxCare" } ], "relationships": [ { "category": "default_component_of", "full_product_name": { "name": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch as a component of AlmaLinux 9.8", "product_id": "AlmaLinux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch" }, "product_reference": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "relates_to_product_reference": "AlmaLinux-9.8" }, { "category": "default_component_of", "full_product_name": { "name": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch as a component of AlmaLinux 9.8", "product_id": "AlmaLinux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch" }, "product_reference": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "relates_to_product_reference": "AlmaLinux-9.8" }, { "category": "default_component_of", "full_product_name": { "name": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch as a component of Rocky Linux 9.8", "product_id": "Rocky Linux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch" }, "product_reference": "python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "relates_to_product_reference": "Rocky Linux-9.8" }, { "category": "default_component_of", "full_product_name": { "name": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch as a component of Rocky Linux 9.8", "product_id": "Rocky Linux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch" }, "product_reference": "python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "relates_to_product_reference": "Rocky Linux-9.8" } ] }, "vulnerabilities": [ { "cve": "CVE-2025-66471", "cwe": { "id": "CWE-409", "name": "Improper Handling of Highly Compressed Data (Data Amplification)" }, "notes": [ { "category": "description", "text": "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.", "title": "Vulnerability description" } ], "product_status": { "fixed": [ "AlmaLinux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "AlmaLinux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "Rocky Linux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "Rocky Linux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch" ] }, "references": [ { "category": "self", "summary": "Canonical URL", "url": "https://cve.tuxcare.com/els/cve/CVE-2025-66471" }, { "category": "external", "summary": "https://github.com/urllib3/urllib3/commit/c19571de34c47de3a766541b041637ba5f716ed7", "url": "https://github.com/urllib3/urllib3/commit/c19571de34c47de3a766541b041637ba5f716ed7" }, { "category": "external", "summary": "https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37", "url": "https://github.com/urllib3/urllib3/security/advisories/GHSA-2xpw-w6gg-jr37" } ], "release_date": "2025-12-05T17:16:00Z", "remediations": [ { "category": "vendor_fix", "date": "2026-10-16T11:49:41.171929Z", "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1792151379", "product_ids": [ "AlmaLinux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "AlmaLinux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch", "Rocky Linux-9.8:python3.11-pip-0:22.3.1-6.el9.tuxcare.els1.noarch", "Rocky Linux-9.8:python3.11-pip-wheel-0:22.3.1-6.el9.tuxcare.els1.noarch" ], "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1792151379" } ], "threats": [ { "category": "impact", "details": "Important" } ] } ] }