{"affected":[{"defaultStatus":"unaffected","product":"suneditor","source":"CNA: VulnCheck","vendor":"JiHong88","versions":[{"lessThan":"3.4.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"3.4.0","versionType":"semver"}]}],"cveId":"CVE-2026-124492","cwes":["CWE-79"],"description":"SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor's #createBookmarkList, which inserts entity-decoded h1-h6 header textContent into the bookmark list via innerHTML without escaping. Attackers can store HTML-encoded payloads in editor headers that execute JavaScript when a victim opens the link modal and types # in the URL input.","epss":{"date":"2026-11-12","percentile":0.11513,"score":0.00211},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56"}],"kev":null,"metrics":[{"score":8.3,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","version":"4.0"},{"score":7.6,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"},{"score":8.3,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":7.6,"severity":"high","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","version":"3.1"}],"modifiedAt":1794540762190,"publishedAt":1794143768514,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-link-modal-bookmark-list"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-link-modal-bookmark-list"}],"remediation":[],"revision":"6edd75626aa37d956fff5d3015c449930e254fd8a22ebc13a98ba22ebf171a4a","sources":[{"modifiedAt":1794540762190,"name":"CNA: VulnCheck","retrievedAt":1794542946576,"url":"https://www.cve.org/CVERecord?id=CVE-2026-124492"},{"modifiedAt":1794519366743,"name":"NVD","retrievedAt":1794529136576,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124492"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794542960866,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-124492"}],"ssvc":{"assessedAt":1794540720499,"automatable":"no","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"SunEditor before 3.4.0 Stored XSS via Link Modal Bookmark List","updatedAt":1794542960866}