CVE-2025-62659

The CookieConsent extension does not properly use reserved data attributes, thus introducing potential XSS vectors

State: Published
Severity: 2.1 Low
Published: Oct 22, 2025
Updated: Oct 22, 2025
Reserved: Oct 17, 2025

Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation MediaWiki CookieConsent extension allows Cross-Site Scripting (XSS).This issue affects MediaWiki CookieConsent extension: from v0.1.0 before v2.0.0.

Scores

CVSS	Score	Vector	Source
4.0	2.1 Low	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:C/RE:M/U:Amber	wikimedia-foundation

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
MediaWiki CookieConsent extensionThe Wikimedia Foundation	v2.0.0Not affected v0.1.0 to before v2.0.0Affected

References

https://phabricator.wikimedia.org/T404475

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