{"id":"CVE-2026-47759","aliases":["GHSA-q742-qvgc-gc2f"],"url":"https://o3.security/vulnerability/CVE-2026-47759","summary":"TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes","details":"TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability via unsanitized data-mce-* attributes (data-mce-href, data-mce-src, data-mce-style). Allows attackers to inject malicious values that override safe attributes during serialization, bypassing validation. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.","published":"2026-05-28T15:20:11.242Z","modified":"2026-08-12T03:51:35.916769942Z","cvss":{"score":8.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N"},"epss":{"score":0.00281,"percentile":0.20058,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"tinymce","fixedVersion":null},{"ecosystem":"npm","name":"tinymce","fixedVersion":"7.9.3"},{"ecosystem":"npm","name":"tinymce","fixedVersion":"8.5.1"},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":null},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":"7.9.3"},{"ecosystem":"NuGet","name":"TinyMCE","fixedVersion":"8.5.1"},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":null},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":"7.9.3"},{"ecosystem":"Packagist","name":"tinymce/tinymce","fixedVersion":"8.5.1"}],"fix":null,"references":[{"type":"WEB","url":"https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview"},{"type":"WEB","url":"https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47759.json"},{"type":"ADVISORY","url":"https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47759"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:35.916769942Z"}}