Description
The MsUpload extension for MediaWiki is vulnerable to stored XSS via the msu-continue system message, which is inserted into the DOM without proper sanitization. The vulnerability occurs in the file upload UI when the same filename is uploaded twice.




This issue affects Mediawiki - MsUpload extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Published: 2025-07-08
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-20664 The MsUpload extension for MediaWiki is vulnerable to stored XSS via the msu-continue system message, which is inserted into the DOM without proper sanitization. The vulnerability occurs in the file upload UI when the same filename is uploaded twice. This issue affects Mediawiki - MsUpload extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
History

Thu, 10 Jul 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 08 Jul 2025 17:30:00 +0000

Type Values Removed Values Added
Description The MsUpload extension for MediaWiki is vulnerable to stored XSS via the msu-continue system message, which is inserted into the DOM without proper sanitization. The vulnerability occurs in the file upload UI when the same filename is uploaded twice. This issue affects Mediawiki - MsUpload extension: from 1.39.X before 1.39.13, from 1.42.X before 1.42.7, from 1.43.X before 1.43.2.
Title MsUpload: Stored Cross-Site Scripting (XSS) via unsanitized msu-continue system message
Weaknesses CWE-79
References

Subscriptions

Mediawiki Mediawiki
cve-icon MITRE

Status: PUBLISHED

Assigner: wikimedia-foundation

Published:

Updated: 2025-07-10T13:19:38.972Z

Reserved: 2025-07-08T17:18:05.309Z

Link: CVE-2025-7362

cve-icon Vulnrichment

Updated: 2025-07-10T13:19:35.707Z

cve-icon NVD

Status : Deferred

Published: 2025-07-08T18:15:46.797

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-7362

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-07-13T22:31:26Z

Weaknesses