CVE-2025-11261

Name: CVE-2025-11261
Creator: NVD / NIST
Published: 2026-02-03T01:15:57.483+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

NONECVSS 0/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2025-11261 is a none-severity vulnerability. Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Language/mediawiki.Language.Js. This issue affects MediaWiki: from * before 1.39.15, 1.43.5, 1.44.2.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files resources/src/mediawiki.Language/mediawiki.Language.Js. This issue affects MediaWiki: from * before 1.39.15, 1.43.5, 1.44.2.

Metrics

CVSS 3.1

6.1/10

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

CVSS 4.0

0/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/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

0.22%

13.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.39.15
Mediawiki	Mediawiki	>= 1.43.0, < 1.43.5
Mediawiki	Mediawiki	>= 1.44.0, < 1.44.2

References

https://https://phabricator.wikimedia.org/T406322Broken Link
https://phabricator.wikimedia.org/T402077Permissions Required

Timeline

Published: Feb 3, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-11261?

How severe is CVE-2025-11261?

Severity scoring for CVE-2025-11261 is pending analysis. The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2025-11261?

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-2025-11261?

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

Scan your code now

Source: NVD / NIST