{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"MbinOrg/mbin","product":"mbin","source":"CNA: VulnCheck","vendor":"MbinOrg","versions":[{"lessThan":"1.11.1","status":"affected","version":"1.2.1","versionType":"semver"},{"status":"unaffected","version":"1.11.1","versionType":"semver"}]}],"cveId":"CVE-2026-126569","cwes":["CWE-79"],"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},{"score":5.4,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794364565461,"publishedAt":1794364565461,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/MbinOrg/mbin/security/advisories/GHSA-g3r9-j6w4-2257"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/MbinOrg/mbin/commit/736fd39fe9cd59f5d51636d25e1857d88ddbd0bd"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/MbinOrg/mbin/releases/tag/v1.11.1"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/MbinOrg/mbin/blob/v1.11.0/src/Markdown/CommonMark/EmbedElement.php#L57-L67"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/mbin-1.2.1-before-1.11.1-stored-xss-via-markdown-image-nested-in-link"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/MbinOrg/mbin/commit/736fd39fe9cd59f5d51636d25e1857d88ddbd0bd"}],"revision":"e869065d86028ff24cc318d405dd335bd198c518dd3365a9ed4a70b3ea5cc597","sources":[{"modifiedAt":1794364565461,"name":"CNA: VulnCheck","retrievedAt":1794366524288,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126569"}],"ssvc":null,"status":"published","title":"Mbin 1.2.1 before 1.11.1 Stored XSS via Markdown Image Nested in Link","updatedAt":1794366524288}