CRITICAL 9.3 NVD
CVE-2026-124494
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability because the html.clean() sanitizer's _normalizeURL() function decodes named entities
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability because the html.clean() sanitizer's _normalizeURL() function decodes named entities like : to an empty string. Attackers can inject href values such as javascript: that pass the _isSafeURL() check but are decoded by browsers, executing JavaScript when victims click stored links.
References
- https://github.com/JiHong88/suneditor/security/advisories/GHSA-v4jx-8pj6-w4w8
- https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-colon-entity-sa
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-11-08 via NVD.
Risk Timeline
CVE Disclosed2026-11-08 · -1 days ago
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