Medium severity6.1NVD Advisory· Published Nov 8, 2026
CVE-2026-124422
CVE-2026-124422
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.
Affected products
2Patches
Vulnerability mechanics
References
5- github.com/JiHong88/suneditor/blob/3.3.3/src/core/logic/dom/html.jsnvd
- github.com/JiHong88/suneditor/commit/57db24ac218cd10942fed0bb8288e9cb40b334bbnvd
- github.com/JiHong88/suneditor/releases/tag/3.4.0nvd
- github.com/JiHong88/suneditor/security/advisories/GHSA-q867-q2hw-f8gpnvd
- www.vulncheck.com/advisories/suneditor-3.0.0-before-3.4.0-stored-xss-via-html-clean-iframe-placeholdernvd
News mentions
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