{"affected":[{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"suneditor","product":"suneditor","source":"CNA: VulnCheck","vendor":"jihong88","versions":[{"lessThan":"3.4.0","status":"affected","version":"3.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-124422","cwes":["CWE-79"],"description":"SunEditor from 3.0.0 before 3.4.0 contains a stored cross-site scripting vulnerability in html.clean() that rebuilds iframes from data-se-iframe-holder-attrs JSON without filtering srcdoc or uppercase SRC keys. Attackers can inject crafted HTML through paste, html.set, or html.insert to execute script in the host page origin when victims load or paste the content.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},{"score":6.1,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}],"modifiedAt":1794101921148,"publishedAt":1794101921148,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-q867-q2hw-f8gp"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/JiHong88/suneditor/commit/57db24ac218cd10942fed0bb8288e9cb40b334bb"},{"source":"CNA: VulnCheck","tags":["release-notes"],"url":"https://github.com/JiHong88/suneditor/releases/tag/3.4.0"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/JiHong88/suneditor/blob/3.3.3/src/core/logic/dom/html.js#L336-L350"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/suneditor-3.0.0-before-3.4.0-stored-xss-via-html-clean-iframe-placeholder"}],"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/JiHong88/suneditor/commit/57db24ac218cd10942fed0bb8288e9cb40b334bb"}],"revision":"71ac0257e6afdd160b1161f31b34f90460a9a472fe22af372545e36dd13a3c60","sources":[{"modifiedAt":1794101921148,"name":"CNA: VulnCheck","retrievedAt":1794103858139,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124422"}],"ssvc":null,"status":"published","title":"SunEditor 3.0.0 before 3.4.0 Stored XSS via html.clean() Iframe Placeholder","updatedAt":1794103858139}