CVE-2025-59839

Star Citizen EmbedVideo Extension Stored XSS through wikitext caused by usage of non-reserved data attributes

Published Sep 25, 2025 CVSS 3.1 · 8.6 High EPSS < 1% KEV · Not listed
Description
The EmbedVideo Extension is a MediaWiki extension which adds a parser function called #ev and various parser tags for embedding video clips from various video sharing services. In versions 4.0.0 and prior, the EmbedVideo extension allows adding arbitrary attributes to an HTML element, allowing for stored XSS through wikitext. This issue has been patched via commit 4e075d3.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-31038 Star Citizen EmbedVideo Extension Stored XSS through wikitext caused by usage of non-reserved data attributes
Github GHSA Github GHSA GHSA-4j5h-mvj3-m48v Star Citizen EmbedVideo Extension Stored XSS through wikitext caused by usage of non-reserved data attributes
History
Type Values Removed Values Added
First Time appeared Star-citizen
Star-citizen embedvideo
CPEs cpe:2.3:a:star-citizen:embedvideo:*:*:*:*:*:mediawiki:*:*
Vendors & Products Star-citizen
Star-citizen embedvideo
Type Values Removed Values Added
First Time appeared Mediawiki
Mediawiki mediawiki
Vendors & Products Mediawiki
Mediawiki mediawiki
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Description The EmbedVideo Extension is a MediaWiki extension which adds a parser function called #ev and various parser tags for embedding video clips from various video sharing services. In versions 4.0.0 and prior, the EmbedVideo extension allows adding arbitrary attributes to an HTML element, allowing for stored XSS through wikitext. This issue has been patched via commit 4e075d3.
Title Star Citizen EmbedVideo Extension Stored XSS through wikitext caused by usage of non-reserved data attributes
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 25, 2025, 2:19 PM
Reserved
Sep 22, 2025, 2:34 PM
Status
Analyzed
Published
Sep 25, 2025, 2:15 PM
Modified
Oct 11, 2026, 8:10 PM