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.
Metrics
CVSS 3.1 5.3/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Python Software Foundation | CPython | < 3.10.20; >= 3.11.0, < 3.11.15; >= 3.12.0, < 3.12.13; >= 3.13.0, < 3.13.11; >= 3.14.0, < 3.14.2; >= 3.15.0a1, < 3.15.0a3 |
References
- https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0Patch
- https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4Patch
- https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af6868715437
- https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436af
- https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a273
- https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f76907
- https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842d
- https://github.com/python/cpython/commit/a46c10ec9d4050ab67b8a932e0859a2ea60c3cb8
- https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed8
- https://github.com/python/cpython/commit/c97e87593063d84a2bd9fe7068b30eb44de23dc0
- https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db953964Patch
- https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53
- https://github.com/python/cpython/issues/142145Issue Tracking, Patch
- https://github.com/python/cpython/pull/142146Issue Tracking, Patch
Timeline
- Published
- Dec 3, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Modified