Medium severity6.4NVD Advisory· Published Nov 8, 2026
CVE-2026-124491
CVE-2026-124491
Description
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the FileUpload plugin create() method that assigns server-returned file names to innerHTML without escaping. Attackers can upload files with HTML-laden names that bypass html.clean() and execute JavaScript in victims' browsers when content or gallery items load, enabling session theft.
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Affected products
1Patches
Vulnerability mechanics
References
2News mentions
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