{"id":"CVE-2026-124492","aliases":["EUVD-2026-119547","GHSA-5pp5-5qrp-vq56","GHSA-h8r9-r2r8-gxj7"],"status":"published","title":"SunEditor before 3.4.0 Stored XSS via Link Modal Bookmark List","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.","severity":{"version":"4.0","score":8.3,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00211,"percentile":0.11513,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-11-08T13:16:08Z","modified":"2026-11-09T02:47:18Z","products":[{"vendor":"jihong88","product":"suneditor"}],"references":[{"url":"https://github.com/JiHong88/suneditor/security/advisories/GHSA-5pp5-5qrp-vq56","tags":["vendor-advisory","advisory"]},{"url":"https://www.vulncheck.com/advisories/suneditor-before-3.4.0-stored-xss-via-link-modal-bookmark-list","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124492","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h8r9-r2r8-gxj7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/124xxx/CVE-2026-124492.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-124492","title":"SunEditor before 3.4.0 Stored XSS via Link Modal Bookmark List","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.","status":"published","published":"2026-11-08T13:16:08.514Z","modified":"2026-11-08T13:16:08.514Z","cvss":[{"version":"4.0","score":8.3,"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-08T14:43:22.764053Z"}],"euvd":[{"id":"EUVD-2026-119547","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.","status":"published","published":"2026-11-08T13:16:08Z","modified":"2026-11-08T13:16:08Z","cvss":[{"version":"4.0","score":8.3,"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","level":"high"}],"updated_at":"2026-11-08T18:13:38.995386Z"}],"ghsa":[{"id":"GHSA-h8r9-r2r8-gxj7","title":"SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in ModalAnchorEditor...","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.","status":"published","published":"2026-11-08T15:31:30Z","modified":"2026-11-08T15:31:37Z","cvss":[{"version":"4.0","score":8.3,"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","level":"high"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-08T15:43:44.180314Z"}],"nvd":[{"id":"CVE-2026-124492","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.","status":"published","published":"2026-11-08T14:18:18.98Z","modified":"2026-11-08T14:18:18.98Z","cvss":[{"version":"4.0","score":8.3,"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","level":"high","assessor":"secondary"},{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-08T16:10:21.259879Z"}],"osv":[{"id":"CVE-2026-124492","title":"SunEditor before 3.4.0 Stored XSS via Link Modal Bookmark List","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.","status":"published","published":"2026-11-08T13:16:08.514Z","modified":"2026-11-10T02:45:45.077413707Z","cvss":[{"version":"4.0","score":8.3,"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","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-09T03:16:17.543303Z"}]}}