{"id":"CVE-2025-59839","title":"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","summary":"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…","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","cwe":["CWE-79"],"vendor":"star-citizen","product":"embedvideo","affected":["embedvideo <= 4.0.0"],"published":"2025-09-25","updated":"2026-10-11","sourceUpdated":"2026-10-11T20:10:00.200","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-59839","references":[{"url":"https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/440fb331a84b2050f4cc084c1d31d58a1d1c202d/resources/ext.embedVideo.videolink.js#L5-L20","label":"security-advisories@github.com"},{"url":"https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/blob/440fb331a84b2050f4cc084c1d31d58a1d1c202d/resources/modules/iframe.js#L139-L155","label":"security-advisories@github.com"},{"url":"https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/commit/4e075d3dc9a15a3ee53f449a684d5ab847e52f01","label":"security-advisories@github.com"},{"url":"https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advisories/GHSA-4j5h-mvj3-m48v","label":"security-advisories@github.com"},{"url":"https://github.com/StarCitizenWiki/mediawiki-extensions-EmbedVideo/security/advisories/GHSA-4j5h-mvj3-m48v","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00303,"epssPercentile":0.21216,"ingestedAt":"2026-10-12T14:50:33.990Z","slug":"CVE-2025-59839","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `embedvideo <= 4.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}