CVE-2025-62656

GlobalBlocking Special:GlobalBlockList vulnerable to message key stored XSS

Published Oct 20, 2025 CVSS 4.0 · 5.8 Medium EPSS < 1% KEV · Not listed
Description
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation MediaWiki GlobalBlocking extension allows Stored XSS.This issue affects MediaWiki GlobalBlocking extension: 1.43, 1.44.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
References
History
Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki globalblocking
Mediawiki mediawiki
Vendors & Products Mediawiki
Mediawiki globalblocking
Mediawiki mediawiki
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation MediaWiki GlobalBlocking extension allows Stored XSS.This issue affects MediaWiki GlobalBlocking extension: 1.43, 1.44.
Title GlobalBlocking Special:GlobalBlockList vulnerable to message key stored XSS
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.8, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/S:N/AU:N/R:U/V:C/RE:L/U:Amber'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
wikimedia-foundation
Published
Updated
Oct 20, 2025, 8:35 PM
Reserved
Oct 17, 2025, 10:01 PM
Status
Deferred
Published
Oct 20, 2025, 9:15 PM
Modified
Oct 8, 2026, 10:10 PM