{"id":"CVE-2026-104461","published":"2026-10-02T12:17:18.303","lastModified":"2026-10-06T17:17:13.037","description":"YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in the Bazar FileField, which validates only the upload's file extension and never calls HtmlPurifierService::cleanFile, so SVG files are stored verbatim and served inline as image/svg+xml. Authenticated users can submit entries via POST /api/entries/{formId} with SVG files containing script that executes in the wiki origin when the file is opened, enabling administrator session or account compromise.","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/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m","tags":[]},{"url":"https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-stored-xss-via-unsanitized-svg-upload-in-bazar-filefield","tags":[]},{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m","tags":[]}],"exploitRefs":[{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m","tags":[]},{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-67v5-7pfv-pp9m","tags":[]}],"hasPoc":true,"ai":null}