{"id":"CVE-2026-104466","published":"2026-10-02T12:17:19.217","lastModified":"2026-10-02T15:17:08.287","description":"YesWiki before 4.6.7 contains a stored cross-site scripting vulnerability in formatters/wakka.php that allows users who can edit pages or post comments to inject event handlers by placing quotes in markdown image URLs. Attackers can store a crafted markdown image whose src breaks out of the attribute to add an onerror handler, executing JavaScript in viewers' browsers, including administrators.","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-7pv9-pwm8-cwwr","tags":[]},{"url":"https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-stored-xss-via-wakka-markdown-image-src-attribute","tags":[]},{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7pv9-pwm8-cwwr","tags":[]}],"exploitRefs":[{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7pv9-pwm8-cwwr","tags":[]},{"url":"https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7pv9-pwm8-cwwr","tags":[]}],"hasPoc":true,"ai":null}