HIGH 8.3 NVD
CVE-2026-124492
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor's #createBookmarkList, which inserts entity-decoded h1-h6 heade
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor's #createBookmarkList, which inserts entity-decoded h1-h6 header textContent into the bookmark list via innerHTML without escaping. Attackers can store HTML-encoded payloads in editor headers that execute JavaScript when a victim opens the link modal and types # in the URL input.
References
- https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56
- https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-link-modal-book
This high severity vulnerability with a CVSS score of 8.3 was published on 2026-11-08 via NVD.
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