CVE-2025-0938
Medium
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.
SeverityMedium
CVSS6.3
Exploit probability—
ProductCPython
PublishedJan 31, 2025
First seenJan 31, 2025
Weakness typeCWE-20Improper input validation
How to fix
Update
- Python Software Foundation CPython3.9.22, 3.10.17, 3.11.12, 3.12.9, 3.13.2, 3.14.0a5 or later
Patches
- github.com/python/cpython/pull/129418
- github.com/python/cpython/commit/d89a5f6a6e65511a5f6e0618c4c30a7aa5aba56a
- github.com/python/cpython/commit/90e526ae67b172ed7c6c56e7edad36263b0f9403
- github.com/python/cpython/commit/a7084f6075c9595ba60119ce8c62f1496f50c568
- github.com/python/cpython/commit/526617ed68cde460236c973e5d0a8bad4de896ba
- github.com/python/cpython/commit/b8b4b713c5f8ec0958c7ef8d29d6711889bc94ab
- github.com/python/cpython/commit/ff4e5c25666f63544071a6b075ae8b25c98b7a32
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Python Software Foundation CPython | v < 3.9.22, 3.10.0 ≤ v < 3.10.17, 3.11.0 ≤ v < 3.11.12, 3.12.0 ≤ v < 3.12.9, 3.13.0 ≤ v < 3.13.2, 3.14.0a1 ≤ v < 3.14.0a5 | 3.9.22, 3.10.17, 3.11.12, 3.12.9, 3.13.2, 3.14.0a5 |
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