CVE-2025-62659 - CVE House
Back to Database
Status published Low CVE-2025-62659

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

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-62659

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • SomeRandomDeveloper

References

More from The Wikimedia Foundation

View All →
CVE-2025-62702
Stored XSS through system messages
Medium 6.9
CVE-2025-62701
Stored XSS through system messages
Medium 6.9
CVE-2025-62700
Stored XSS through a system message in MultiBoilerplate
Medium 6.9
CVE-2025-62699
Special:Translate tool does not use the correct IP and User-Agent in the CheckUser tool
Medium 6.9
CVE-2025-62698
Stored XSS through system messages in ExternalGuidance
Medium 6.9

Affected Vendor

The Wikimedia Foundation

View all reports →

Affected Software

MediaWiki CookieConsent extension
Vulnerable Versions:
v2.0.0, v0.1.0

Timeline

Official Publish: October 22nd, 2025
Last Modified: October 22nd, 2025
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-79

MITRE ATT&CK TTPs

T1189 Drive-by Compromise
Initial Access
T1059.007 JavaScript
Execution
T1539 Steal Web Session Cookie
Collection
T1213 Data from Information Repositories
Collection
T1567 Exfiltration Over Web Service
Exfiltration
T1491.001 Defacement
Impact