CVE-2026-124493: JiHong88 suneditor: SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the DocumentType constructor that…

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 mo...