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Impact\nStored 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.\n\n### Patches\nPatched by stripping unsafe data-mce-* attributes during parsing. Users should upgrade to the latest patched versions (5 LTS, 7.x, 8.x).\n\n### Workarounds\nNo official workaround available.\n\n### Fix\nTo avoid this vulnerability:\n\nUpgrade to TinyMCE 8.5.1 or higher.\nUpgrade to TinyMCE 7.9.3 or higher.\nUpgrade to TinyMCE 5.11.1 LTS or higher for TinyMCE 5.x (only available as part of commercial [long-term support](https://www.tiny.cloud/long-term-support/) contract).\n\n### Acknowledgements\nTiny thanks [Tadi Kadango](https://github.com/mtrill47) ([website](https://tadiwakadango.com/))  and [Ivan Babenko](https://github.com/he1d3n) for their help identifying this vulnerability.","id":"GHSA-q742-qvgc-gc2f","modified":"2026-09-10T03:51:10.328388649Z","published":"2026-06-05T20:27:50Z","references":[{"type":"WEB","url":"https://github.com/tinymce/tinymce/security/advisories/GHSA-q742-qvgc-gc2f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47759"},{"type":"PACKAGE","url":"https://github.com/tinymce/tinymce"},{"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"}],"schema_version":"1.9.0","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","type":"CVSS_V3"}],"summary":"TinyMCE Cross-Site Scripting (XSS) vulnerability using through data-mce- prefixed src, href, style attributes"}