CVE-2024-47840 - CVE House
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Status published Medium CVE-2024-47840

Stored XSS through sidebar in Apex skin

Vulnerability Description

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in The Wikimedia Foundation Mediawiki - Apex skin allows Stored XSS.This issue affects Mediawiki - Apex skin: from 1.39.X before 1.39.9, from 1.41.X before 1.41.3, from 1.42.X before 1.42.2.

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:

  • R4356th

References

More from The Wikimedia Foundation

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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 - Apex skin
Vulnerable Versions:
1.39.x, 1.41.x, 1.42.x

Timeline

Official Publish: October 5th, 2024
Last Modified: October 7th, 2024
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