{"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":"suneditor","product":"suneditor","affected":["suneditor <= 2.47.10"],"patched":["suneditor 2.47.11"],"published":"2026-09-23","updated":"2026-09-24","sourceUpdated":"2026-09-24T15:17:25.303","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"},{"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-6rf4-v2fh-m6p4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59167"},{"url":"https://github.com/advisories/GHSA-6rf4-v2fh-m6p4"}],"tags":["nvd","ghsa","npm","cve.org","exploit-available"],"aliases":["GHSA-6rf4-v2fh-m6p4"],"ecosystem":"npm","exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-24T14:24:21.114425Z"},"ingestedAt":"2026-09-23T14:25:29.800Z","epss":0.00499,"epssPercentile":0.42563,"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.\n\n## Package advisory (CVE-2026-59167)\n\nAffected packages:\n\n- `suneditor <= 2.47.10`\n\nPatched in:\n\n- `suneditor 2.47.11`\n\nSource: https://github.com/advisories/GHSA-6rf4-v2fh-m6p4","depth":"abyssal","depthScore":67,"depthScoreParts":{"impact":55,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":210183,"id":"CVE-2026-59167","ts":1790264794456,"field":"exploit_available","old":"false","new":"true"}]}