Vulnerability Description
When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building excessively nested documents.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python | Python | < 3.13.11 |
Related Weaknesses (CWE)
References
- https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51aPatch
- https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486ePatch
- https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af686871543
- https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436a
- https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a27
- https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f7690
- https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842
- https://github.com/python/cpython/commit/a46c10ec9d4050ab67b8a932e0859a2ea60c3cb
- https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed
- https://github.com/python/cpython/commit/c97e87593063d84a2bd9fe7068b30eb44de23dc
- https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db95396Patch
- https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b5
- https://github.com/python/cpython/issues/142145Issue TrackingPatch
- https://github.com/python/cpython/pull/142146Issue TrackingPatch
FAQ
What is CVE-2025-12084?
CVE-2025-12084 is a vulnerability with a CVSS score of 5.3 (MEDIUM). When building nested elements using xml.dom.minidom methods such as appendChild() that have a dependency on _clear_id_cache() the algorithm is quadratic. Availability can be impacted when building exc...
How severe is CVE-2025-12084?
CVE-2025-12084 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-12084?
Check the references section above for vendor advisories and patch information. Affected products include: Python Python.