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Vulnerability · Published Oct 22, 2025 · Assigned by wikimedia-foundation

CVE-2025-62659The CookieConsent extension does not properly use reserved data attributes, thus introducing potential XSS vectors

Low 2.1

In plain English

A low-severity cross-site scripting in MediaWiki CookieConsent extension from The Wikimedia Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 4.0)2.1Low
Exploit odds (30 days)0.3%top 78.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
The Wikimedia Foundation MediaWiki CookieConsent extension v0.1.0 – before v2.0.0

Weakness: CWE-79 · Vector: 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

References