{"id":"CVE-2026-126569","published":"2026-11-11T03:16:51.417","lastModified":"2026-11-11T03:16:51.417","description":"Mbin 1.2.1 before 1.11.1 contains a stored cross-site scripting vulnerability in EmbedElement::buildDestructed() that renders nested Markdown image alt text and URL without HTML escaping. Authenticated users can embed HTML in the alt text of an image inside a link in entries, comments, posts, messages, or bios to run script in viewers' browsers.","cvssScore":5.4,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","cwes":["CWE-79"],"vendors":[],"products":[],"references":[{"url":"https://github.com/MbinOrg/mbin/blob/v1.11.0/src/Markdown/CommonMark/EmbedElement.php#L57-L67","tags":[]},{"url":"https://github.com/MbinOrg/mbin/commit/736fd39fe9cd59f5d51636d25e1857d88ddbd0bd","tags":[]},{"url":"https://github.com/MbinOrg/mbin/releases/tag/v1.11.1","tags":[]},{"url":"https://github.com/MbinOrg/mbin/security/advisories/GHSA-g3r9-j6w4-2257","tags":[]},{"url":"https://www.vulncheck.com/advisories/mbin-1.2.1-before-1.11.1-stored-xss-via-markdown-image-nested-in-link","tags":[]}],"exploitRefs":[{"url":"https://github.com/MbinOrg/mbin/blob/v1.11.0/src/Markdown/CommonMark/EmbedElement.php#L57-L67","tags":[]},{"url":"https://github.com/MbinOrg/mbin/commit/736fd39fe9cd59f5d51636d25e1857d88ddbd0bd","tags":[]},{"url":"https://github.com/MbinOrg/mbin/releases/tag/v1.11.1","tags":[]},{"url":"https://github.com/MbinOrg/mbin/security/advisories/GHSA-g3r9-j6w4-2257","tags":[]}],"hasPoc":true,"ai":null}