CVE-2025-12084
Quadratic complexity in node ID cache clearing
- State
- Published
- Severity
- 6.3 Medium
- Published
- Dec 3, 2025
- Updated
- Mar 3, 2026
- Reserved
- Oct 22, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | PSF |
Weaknesses
- CWE-407 Inefficient Algorithmic Complexity
Affected Products
| Product | Versions |
|---|---|
CPythonPython Software Foundation |
|
References
- https://github.com/python/cpython/pull/142146patch
- https://github.com/python/cpython/issues/142145issue-tracking
- https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4patch
- https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0patch
- https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db953964patch
- https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af6868715437patch
- https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f76907patch
- https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842dpatch
- https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed8patch
- https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436afpatch
- https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a273patch
- https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53patch
- https://github.com/python/cpython/commit/a46c10ec9d4050ab67b8a932e0859a2ea60c3cb8patch
- https://github.com/python/cpython/commit/c97e87593063d84a2bd9fe7068b30eb44de23dc0patch
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