# CVE-2025-59839: Star Citizen EmbedVideo Extension Stored XSS through wikitext caused by usage of non-reserved data attributes

Source: https://junglewise.ai/threats/cve-2025-59839-star-citizen-embedvideo-extension-stored-xss-through-wikitext  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-09-24  
License: CC BY 4.0 with a link back

CVE-2025-59839 · Severity: low · CVSS 3.1 · Published 2025-09-24

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

Technologies: [starcitizenwiki/embedvideo (Packagist)](https://junglewise.ai/threats/technologies/starcitizenwiki-embedvideo). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2025-59839 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-59839 being exploited in the wild.

**How severe is CVE-2025-59839?** Low severity, with a CVSS score of 3.1, published 24 September 2025.

**Which products and versions are affected?** starcitizenwiki/embedvideo (Packagist) ECOSYSTEM:introduced=0,last_affected=4.0.0.

**Is there a fix for CVE-2025-59839?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-59839?** Check whether you run starcitizenwiki/embedvideo (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- starcitizenwiki/embedvideo (Packagist) ECOSYSTEM:introduced=0,last_affected=4.0.0

## Identifiers

- CVE-2025-59839
- GHSA-4j5h-mvj3-m48v

## Related threats

- [MediaWiki EmbedVideo Extension stored XSS via unescaped iframe src](https://junglewise.ai/threats/cve-2026-57440-mediawiki-embedvideo-extension-stored-xss-via-unescaped-iframe)
- [StarCitizenWiki EmbedVideo stored XSS in EmbedHtmlFormatter](https://junglewise.ai/threats/cve-2026-55692-starcitizenwiki-embedvideo-stored-xss-in-embedhtmlformatter)
- [StarCitizenWiki EmbedVideo Stored XSS in EmbedHtmlFormatter](https://junglewise.ai/threats/cve-2026-55691-starcitizenwiki-embedvideo-stored-xss-in-embedhtmlformatter)
- [StarCitizenWiki EmbedVideo Stored XSS in exception text](https://junglewise.ai/threats/cve-2026-55690-starcitizenwiki-embedvideo-stored-xss-in-exception-text)