CVE-2025-0938: URL parser allowed square brackets in domain names
First published: Fri Jan 31 2025(Updated: )
Last updated 20 February 2025
Credit: cna@python.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| CPython | ||
| debian/pypy3 | <=7.3.5+dfsg-2+deb11u2<=7.3.5+dfsg-2+deb11u4<=7.3.11+dfsg-2+deb12u3 | 7.3.18+dfsg-2 7.3.19+dfsg-1 |
| debian/python3.11 | <=3.11.2-6+deb12u5<=3.11.2-6+deb12u3 | |
| debian/python3.12 | 3.12.9-1 | |
| debian/python3.13 | 3.13.2-1 | |
| debian/python3.9 | <=3.9.2-1<=3.9.2-1+deb11u2 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-0938
- https://nvd.nist.gov/vuln/detail/CVE-2025-0938
- https://launchpad.net/bugs/cve/CVE-2025-0938
- https://security-tracker.debian.org/tracker/CVE-2025-0938
- https://ubuntu.com/security/CVE-2025-0938
- 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://github.com/python/cpython/commit/d89a5f6a6e65511a5f6e0618c4c30a7aa5aba56a
- https://github.com/python/cpython/commit/90e526ae67b172ed7c6c56e7edad36263b0f9403
- https://github.com/python/cpython/commit/a7084f6075c9595ba60119ce8c62f1496f50c568
- https://github.com/python/cpython/commit/526617ed68cde460236c973e5d0a8bad4de896ba
- https://github.com/python/cpython/commit/b8b4b713c5f8ec0958c7ef8d29d6711889bc94ab
- https://github.com/python/cpython/commit/ff4e5c25666f63544071a6b075ae8b25c98b7a32
- https://github.com/python/cpython/pull/129528
- https://github.com/python/cpython/pull/129530
Frequently Asked Questions
What is the severity of CVE-2025-0938?
CVE-2025-0938 has been classified as a medium severity vulnerability due to potential denial of service risks associated with invalid URL parsing.
How do I fix CVE-2025-0938?
To fix CVE-2025-0938, update to the latest version of Python where the vulnerability has been addressed.
What software is affected by CVE-2025-0938?
CVE-2025-0938 affects the standard library functions of Python, specifically in the urllib.parse module.
What are the implications of CVE-2025-0938?
The implications of CVE-2025-0938 include the possibility of malformed URLs causing unexpected behavior in applications relying on URL parsing.
How does CVE-2025-0938 impact web applications?
CVE-2025-0938 can potentially lead to security issues in web applications by allowing the processing of invalid domain names.
- agent/type
- agent/severity
- agent/weakness
- agent/author
- agent/title
- agent/first-publish-date
- agent/guess-ai
- agent/software-canonical-lookup
- agent/source
- collector/usn-cve
- source/Ubuntu
- agent/description
- collector/mitre-cve
- source/MITRE
- collector/nvd-api
- source/NVD
- collector/nvd-cve
- agent/references
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- vendor/python software foundation
- canonical/cpython
- package-manager/debian