All errata/p11/ALT-PU-2025-15529-5
ALT-PU-2025-15529-5

Package update python3-module-urllib3 in branch p11

Version2.6.1-alt1
Task#402292
Published2026-03-24
Max severityHIGH
Severity:

Closed issues (12)

BDU:2025-09780
MEDIUM5.3

Уязвимость HTTP библиотеки Urllib3 языка программирования Python, связанная с переадресацией URL на ненадежный сайт, позволяющая нарушителю перенаправлять пользователей на произвольный URL-адрес

Published: 2025-08-14
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0MEDIUM 4.9
CVSS:2.0/AV:N/AC:H/Au:S/C:C/I:N/A:N
References
BDU:2025-09791
MEDIUM5.3

Уязвимость HTTP библиотеки Urllib3 языка программирования Python, связанная с переадресацией URL на ненадежный сайт, позволяющая нарушителю перенаправлять пользователей на произвольный URL-адрес

Published: 2025-08-14Modified: 2026-05-06
CVSS 3.xMEDIUM 5.3
CVSS:3.x/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0MEDIUM 4.9
CVSS:2.0/AV:N/AC:H/Au:S/C:C/I:N/A:N
References
BDU:2026-02927
HIGH7.5

Уязвимость HTTP библиотеки для Python Urllib3, связанная с выделением неограниченной памяти, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-03-12Modified: 2026-05-06
CVSS 3.xHIGH 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
BDU:2026-03452
HIGH8.6

Уязвимость HTTP библиотеки Urllib3 языка программирования Python, связанная с некорректной обработкой сильно сжатых входных данных, позволяющая нарушителю вызвать отказ в обслуживании

Published: 2026-03-23Modified: 2026-04-20
CVSS 3.xHIGH 8.6
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0HIGH 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
References
CVE-2025-50181
MEDIUM6.1

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.

Published: 2025-06-19Modified: 2025-12-22
CVSS 3.xMEDIUM 6.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
CVE-2025-50182
MEDIUM6.1

urllib3 is a user-friendly HTTP client library for Python. Starting in version 2.2.0 and prior to 2.5.0, urllib3 does not control redirects in browsers and Node.js. urllib3 supports being used in a Pyodide runtime utilizing the JavaScript Fetch API or falling back on XMLHttpRequest. This means Python libraries can be used to make HTTP requests from a browser or Node.js. Additionally, urllib3 provides a mechanism to control redirects, but the retries and redirect parameters are ignored with Pyodide; the runtime itself determines redirect behavior. This issue has been patched in version 2.5.0.

Published: 2025-06-19Modified: 2025-12-22
CVSS 3.xMEDIUM 6.1
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
CVE-2025-66418
HIGH8.9

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.

Published: 2025-12-05Modified: 2025-12-10
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0HIGH 8.9
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
CVE-2025-66471
HIGH8.9

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.

Published: 2025-12-05Modified: 2025-12-10
CVSS 3.xHIGH 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 4.0HIGH 8.9
CVSS:4.0/CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
References
GHSA-48p4-8xcf-vxj5
MEDIUM5.3

urllib3 does not control redirects in browsers and Node.js

Published: 2025-06-18Modified: 2025-12-22
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
GHSA-pq67-6m6q-mj2v
MEDIUM5.3

urllib3 redirects are not disabled when retries are disabled on PoolManager instantiation

Published: 2025-06-18Modified: 2025-12-23
CVSS 3.xMEDIUM 5.3
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References