{"id":"CVE-2026-116675","summary":"TinyMCE Cross-Site Scripting (XSS) vulnerability using media plugin `data-mce-object` serialization","details":"TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4.","aliases":["GHSA-mf2p-h6hf-fcwm"],"modified":"2026-10-28T02:54:50.057336909Z","published":"2026-10-27T16:47:01.183Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-79"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116675.json","unresolved_ranges":[{"extracted_events":[{"range":[{"introduced":"7.9.3"},{"fixed":"7.9.4"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/116xxx/CVE-2026-116675.json"},{"type":"FIX","url":"https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2"},{"type":"WEB","url":"https://github.com/tinymce/tinymce/releases/tag/8.9.3"},{"type":"ADVISORY","url":"https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116675"},{"type":"WEB","url":"https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview"},{"type":"WEB","url":"https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tinymce/tinymce","events":[{"introduced":"03573dd3ca7ac79f79b8f6e66f3b4256d3e1de36"},{"fixed":"f7d8fb6d9921782445d075d47e4c3567e7150908"},{"fixed":"bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"8.5.1"},{"fixed":"8.9.3"}],"source":"AFFECTED_FIELD","strategy":"StringRangeExpression"},{"range":[{"fixed":"bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2"}],"source":"REFERENCES_COMMIT"},{"range":[{"fixed":"f7d8fb6d9921782445d075d47e4c3567e7150908"}],"source":"REFERENCES_TAG","original_tag":"8.9.3"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-116675.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}]}