CVE-2025-0938

The Python standard library functions `urllib.parse.urlsplit` and `urlparse` accepted domain names that included square brackets which isn't valid according to RFC 3986. Square brackets are only meant to be used as delimiters for specifying IPv6 and IPvFuture hosts in URLs. This could result in differential parsing across the Python URL parser and other specification-compliant URL parsers.

• CWE-20

• https://github.com/python/cpython/commit/526617ed68cde460236c973e5d0a8bad4de896ba
• https://github.com/python/cpython/commit/90e526ae67b172ed7c6c56e7edad36263b0f9403
• https://github.com/python/cpython/commit/a7084f6075c9595ba60119ce8c62f1496f50c568
• https://github.com/python/cpython/commit/b8b4b713c5f8ec0958c7ef8d29d6711889bc94ab
• https://github.com/python/cpython/commit/d89a5f6a6e65511a5f6e0618c4c30a7aa5aba56a
• https://github.com/python/cpython/commit/ff4e5c25666f63544071a6b075ae8b25c98b7a32
• https://github.com/python/cpython/issues/105704
• https://github.com/python/cpython/pull/129418
• https://mail.python.org/archives/list/security-announce@python.org/thread/K4EUG6EKV6JYFIC24BASYOZS4M5XOQIB/
• https://lists.debian.org/debian-lts-announce/2025/03/msg00013.html
• https://security.netapp.com/advisory/ntap-20250314-0002/

Published

Jan 31, 2025

Last Modified

Jul 31, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-0930Reflected Cross-Site Scripting (XSS) in TeamCal Neo, version…6.1
• CVE-2025-0932Use After Free vulnerability in Arm Ltd Bifrost GPU Userspac…4.3
• CVE-2025-0934A vulnerability was found in code-projects Job Recruitment 1…7.5
• CVE-2025-0935The Media Library Folders plugin for WordPress is vulnerable…4.3
• CVE-2025-0936On affected platforms running Arista EOS with a gNMI transpo…6.5
• CVE-2025-0937Nomad Community and Nomad Enterprise ("Nomad") event stream …7.1
• CVE-2025-0939The MagicForm plugin for WordPress is vulnerable to access a…6.3
• CVE-2025-0941MET ONE 3400+ instruments running software v1.0.41 can, unde…5.8
• CVE-2025-0942The DB chooser functionality in Jalios JPlatform 10 SP6 befo…8.6
• CVE-2025-0943A vulnerability was found in itsourcecode Tailoring Manageme…9.8
• CVE-2025-0944A vulnerability was found in itsourcecode Tailoring Manageme…9.8
• CVE-2025-0945A vulnerability classified as critical has been found in its…9.8