{"id":"CVE-2026-59167","title":"SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies","summary":"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…","severity":"critical","cvss":10,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-79"],"vendor":"JiHong88","product":"suneditor","affected":["suneditor < 2.47.11"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:12:04.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59167","references":[{"url":"https://github.com/JiHong88/suneditor/commit/a94ace269c7102bfb6de58a27a6547bc4eb09045","label":"security-advisories@github.com"},{"url":"https://github.com/JiHong88/suneditor/issues/1646","label":"security-advisories@github.com"},{"url":"https://github.com/JiHong88/suneditor/releases/tag/2.47.11","label":"security-advisories@github.com"},{"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-6rf4-v2fh-m6p4","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-23T14:25:29.800Z","slug":"CVE-2026-59167","body":"## Overview\n\nSunEditor 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":55,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}