CVE-2025-12084

Name: CVE-2025-12084
Creator: NVD / NIST
Published: 2025-12-03T19:15:55.05+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2025-12084 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

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:L

CVSS 4.0

6.3/10

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.70%

48.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-407

Affected Software

Vendor	Product	Versions	Update
Python	Python	< 3.13.11	—
Python	Python	>= 3.14.0, < 3.14.2	—
Python	Python	3.15.0	Alpha1

References

Timeline

Published: Dec 3, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-12084?

How severe is CVE-2025-12084?

CVE-2025-12084 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2025-12084?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-12084?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST