Cross-site Scripting Vulnerability in Wikimedia Foundation MediaWiki
CVE-2025-61636

NONE

Key Information:

Vendor

Wikimedia Foundation

Status
Mediawiki
Vendor
CVE Published:
2 February 2026

What is CVE-2025-61636?

A Cross-site Scripting vulnerability exists in Wikimedia Foundation's MediaWiki due to improper handling of user input during web page generation. This issue specifically impacts the HTMLButtonField.php file located in the program files directory. Attackers may exploit this vulnerability to execute arbitrary scripts in the context of a user's browser, potentially compromising user data and integrity. Affected versions include MediaWiki prior to 1.39.14, 1.43.4, and 1.44.1. Users are advised to upgrade to the latest versions to mitigate this risk.

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Affected Version(s)

MediaWiki * < 1.39.14, 1.43.4, 1.44.1

References

https://phabricator.wikimedia.org/T394396

CVSS V4

Score:
Severity:
NONE
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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