Critical Stored XSS Vulnerability in SunEditor (CVE-2026-59167): A Deep Dive Analysis
A critical stored cross-site scripting (XSS) vulnerability, CVE-2026-59167, has been discovered in SunEditor, a popular WYSIWYG editor used in various web applications. With a CVSS score of 10, this vulnerability allows attackers to inject malicious scripts, potentially leading to data exposure, unauthorized browser-context actions, or other malicious activities. The vulnerability affects SunEditor versions prior to 2.47.11 and has been patched in the latest release. Organizations using SunEditor should immediately upgrade to version 2.47.11 or later to mitigate this critical threat.