Detections
Analytics

CVE-2025-12084

medium

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.

References

https://github.com/python/cpython/pull/142146

https://github.com/python/cpython/issues/142145

https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53

https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db953964

https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed8

https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842d

https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f76907

https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a273

https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436af

https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af6868715437

https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4

https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0

Details

Source: Mitre, NVD

Published: 2025-12-03

Updated: 2026-01-14

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Severity: Medium

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Severity: Medium

CVSS v4

Base Score: 6.3

Vector: 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

Severity: Medium

EPSS

EPSS: 0.0004