Vulnerability 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. Prior to 4.1.0, with the default $wgEmbedVideoRequireConsent configuration enabled, includes/EmbedService/EmbedHtmlFormatter.php places JSON returned through includes/EmbedService/AbstractEmbedService.php into the data-mw-iframeconfig attribute without safely escaping single quotes. Attacker-controlled archiveorg identifiers and wistia or sharepoint URLs accepted by the affected service validators can cause getUrl() output to terminate the attribute and inject event-handler attributes into the generated figure element. A user able to edit a wiki page can store JavaScript that executes in the wiki origin when visitors render the page. This issue is fixed in version 4.1.0.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/370156
- https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/releases/tag/
- https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advi
- https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advi
FAQ
What is CVE-2026-55692?
CVE-2026-55692 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. Prior to 4.1.0, with th...
How severe is CVE-2026-55692?
CVE-2026-55692 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-55692?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.