Input validation error in Python - CVE-2025-0938
Published: February 11, 2025
Vulnerability identifier: #VU103812
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-0938
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python.org
Affected software:
Python
Python
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to urllib.parse.urlsplit and urlparse accept domain names with square brackets. A remote attacker can pass specially crafted input to the application and bypass implemented security restrictions.
How to mitigate CVE-2025-0938
Install updates from vendor's website.
Sources
- https://github.com/python/cpython/commit/90e526ae67b172ed7c6c56e7edad36263b0f9403
- https://github.com/python/cpython/commit/a7084f6075c9595ba60119ce8c62f1496f50c568
- https://github.com/python/cpython/commit/d89a5f6a6e65511a5f6e0618c4c30a7aa5aba56a
- 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/