CVE-2025-12084mediumCWE-407

Quadratic complexity in node ID cache clearing

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.3epss 0.8%

exploitation probability

0.8%top 47% of all CVEs

observed exploitation

nono source reports it

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:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Affected products

Python Software Foundation · CPython

References

https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0 https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4 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/ddcd2acd85d891a53e281c773b3093f9db953964 https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53