Answer in brief
CVE-2026-55692 records a High severity vulnerability in EmbedVideo Extension: Stored XSS via malformed src url with $wgEmbedVideoRequireConsent enabled. The current sources do not mark it as known exploited. The current feed maps starcitizenwiki/embedvideo (composer), StarCitizenWiki/mediawiki-extensions-EmbedVideo (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps starcitizenwiki/embedvideo (composer), StarCitizenWiki/mediawiki-extensions-EmbedVideo (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| starcitizenwiki/embedvideocomposer | <=4.0.0 | 4.1.0 |
| StarCitizenWiki/mediawiki-extensions-EmbedVideogeneric | < 4.1.0 | Not reported |
Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.