CVE-2026-59167
CVE-2026-59167 · SunEditor: Critical XSS vulnerability - sanitizer bypass
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SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11, the sanitizer in src/lib/core.js does not consistently reject namespaced or custom HTML elements, allowing event-handler attributes to remain on crafted elements. When an application renders attacker-controlled editor content and a user interacts with the element, the retained handler can execute script in the application's browser origin, enabling stored cross-site scripting, data exposure, or unauthorized browser-context actions. This issue is fixed in version 2.47.11.
CVSS 10.0 · Kritisch · EPSS 0,5% · Korrektur verfügbar
- Veröffentlicht
- Aktualisiert
Technologie-Stack: node
Betroffene Produkte und Versionen
Originalquellen
- https://github.com/JiHong88/suneditor/security/advisories/GHSA-6rf4-v2fh-m6p4
- https://github.com/JiHong88/suneditor/issues/1646
- https://github.com/JiHong88/suneditor/commit/a94ace269c7102bfb6de58a27a6547bc4eb09045
- https://github.com/JiHong88/suneditor/releases/tag/2.47.11
- https://nvd.nist.gov/vuln/detail/CVE-2026-59167