CVE-2025-61640: Stored XSS through system messages in Special:RecentChangesLinked (MW Core)

Published Feb 2, 2026
·
Updated

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.Rcfilters/ui/RclToOrFromWidget.Js.

This issue affects MediaWiki: from before 1.39.14, 1.43.4, 1.44.1.

Affected Software

4 affected components
Wikimedia Foundation MediaWiki<1.39.14
MediaWiki MediaWiki<1.39.14
MediaWiki MediaWiki>=1.39.15<1.43.4
MediaWiki MediaWiki>=1.43.5<1.44.1

Event History

Feb 2, 2026
CVE Published
via MITRE·11:42 PM
Data Sourced
via MITRE·11:42 PM
DescriptionWeakness
Feb 3, 2026
Data Sourced
via NVD·12:16 AM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-61640?

CVE-2025-61640 is considered a high severity vulnerability due to its potential for stored cross-site scripting (XSS) attacks.

2

How do I fix CVE-2025-61640?

To fix CVE-2025-61640, upgrade your MediaWiki installation to a version higher than 1.39.14.

3

What type of vulnerability is CVE-2025-61640?

CVE-2025-61640 is a stored cross-site scripting (XSS) vulnerability.

4

Who is affected by CVE-2025-61640?

CVE-2025-61640 affects users of Wikimedia Foundation MediaWiki versions prior to 1.39.14.

5

What impact can CVE-2025-61640 have on users?

CVE-2025-61640 can allow attackers to execute arbitrary scripts in the context of a user’s browser, potentially compromising user data and security.

Contact

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