Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/python/cpython/commit/526617ed68cde460236c973e5d0a8bad4de896b
- https://github.com/python/cpython/commit/90e526ae67b172ed7c6c56e7edad36263b0f940
- https://github.com/python/cpython/commit/a7084f6075c9595ba60119ce8c62f1496f50c56
- https://github.com/python/cpython/commit/b8b4b713c5f8ec0958c7ef8d29d6711889bc94a
- https://github.com/python/cpython/commit/d89a5f6a6e65511a5f6e0618c4c30a7aa5aba56
- https://github.com/python/cpython/commit/ff4e5c25666f63544071a6b075ae8b25c98b7a3
- https://github.com/python/cpython/issues/105704
- https://github.com/python/cpython/pull/129418
- https://mail.python.org/archives/list/[email protected]/thread/K4EUG6
- https://lists.debian.org/debian-lts-announce/2025/03/msg00013.html
- https://security.netapp.com/advisory/ntap-20250314-0002/
FAQ
What is CVE-2025-0938?
CVE-2025-0938 is a documented vulnerability. 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...
How severe is CVE-2025-0938?
CVSS scoring is not yet available for CVE-2025-0938. Check NVD for updates.
Is there a patch for CVE-2025-0938?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.