High severity8.6NVD Advisory· Published Sep 25, 2025· Updated Jun 17, 2026
CVE-2025-59839
CVE-2025-59839
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
starcitizenwiki/embedvideoPackagist | <= 4.0.0 | — |
Affected products
3- Range: <= 4.0.0
Patches
Vulnerability mechanics
References
6- github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/4e075d3dc9a15a3ee53f449a684d5ab847e52f01nvdPatchWEB
- github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advisories/GHSA-4j5h-mvj3-m48vnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-4j5h-mvj3-m48vghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-59839ghsaADVISORY
- github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/440fb331a84b2050f4cc084c1d31d58a1d1c202d/resources/ext.embedVideo.videolink.jsnvdProductWEB
- github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/440fb331a84b2050f4cc084c1d31d58a1d1c202d/resources/modules/iframe.jsnvdProductWEB
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