Mediawiki EmbedVideo Extension has stored XSS via malformed src url with $wgEmbedVideoRequireConsent disabled
High · CVSS 7.5
### Summary With $wgEmbedVideoRequireConsent disabled (not the default), the urls for videos are passed into an iframe src attribute without sanitization. When given a malformed url or id, the src attribute can be escaped via double quotes, allowing for html/javascript injection. ### Details The iframe assembled [here](https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/a573a16d925ee0ea0d34b360856dc8ab0b88f822/includes/EmbedService/EmbedHtmlFormatter.php#L204-L208) adds the url from `getUrl()` as the src without sanitization.
Remediation
Upgrade starcitizenwiki/embedvideo to 4.1.0 or later.
Affected PHP branches
See the source advisory.
Source: GitHub Global Security Advisories (Composer ecosystem) · retrieved 2026-10-22T10:19:14-04:00 · https://github.com/advisories/GHSA-v65j-hff3-753c