CVE-2025-12084

MEDIUM

xml.dom.minidom - Info Disclosure

Title source: llm

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 (14)

[Issue Tracking, Patch] https://github.com/python/cpython/pull/142146

[Issue Tracking, Patch] https://github.com/python/cpython/issues/142145

[Patch] https://github.com/python/cpython/commit/08d8e18ad81cd45bc4a27d6da478b51ea49486e4

[Patch] https://github.com/python/cpython/commit/027f21e417b26eed4505ac2db101a4352b7c51a0

[Patch] https://github.com/python/cpython/commit/ddcd2acd85d891a53e281c773b3093f9db953964

[Patch] https://github.com/python/cpython/commit/27648a1818749ef44c420afe6173af6868715437

[Patch] https://github.com/python/cpython/commit/8d2d7bb2e754f8649a68ce4116271a4932f76907

[Patch] https://github.com/python/cpython/commit/9c9dda6625a2a90d2a06c657eee021d6be19842d

[Patch] https://github.com/python/cpython/commit/a696ba8b4d42fd632afc9bc88ad830a2e4cceed8

[Patch] https://github.com/python/cpython/commit/41f468786762348960486c166833a218a0a436af

[Patch] https://github.com/python/cpython/commit/57937a8e5e293f0dcba5115f7b7a11b1e0c9a273

[Patch] https://github.com/python/cpython/commit/e91c11449cad34bac3ea55ee09ca557691d92b53

View Patch ZIP pw:eip

[Patch] https://github.com/python/cpython/commit/a46c10ec9d4050ab67b8a932e0859a2ea60c3cb8

[Patch] https://github.com/python/cpython/commit/c97e87593063d84a2bd9fe7068b30eb44de23dc0

Scores

CVSS v3 5.3

EPSS 0.0009

EPSS Percentile 24.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-407

Status published

Products (2)

python/python 3.15.0 alpha1 (2 CPE variants)

python/python < 3.13.11

Published Dec 03, 2025

Tracked Since Feb 18, 2026