CVE-2025-62656 - CVE House
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Status published Medium CVE-2025-62656

GlobalBlocking Special:GlobalBlockList vulnerable to message key stored XSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

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

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Credits & Attribution

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

  • Dreamy_Jazz

References

More from The Wikimedia Foundation

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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 GlobalBlocking extension
Vulnerable Versions:
1.43, 1.44

Timeline

Official Publish: October 20th, 2025
Last Modified: October 20th, 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