CVE-2026-124493
UNKNOWN
NVD
CVSS Score
0
Severity
UNKNOWN
Published
Nov 08, 2026
Vendor
unknown
Description
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the DocumentType constructor that injects header textContent into innerHTML without HTML escaping. Attackers can store entity-encoded HTML in h1-h6 headers that executes JavaScript when editors using document:header mode initialize, enabling session cookie theft.