{"id":"GHSA-mh5m-5hw4-5c69","aliases":["CVE-2026-47760"],"title":"TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs","description":"### Impact\nTinyMCE 6.8.x contains an XSS vulnerability caused by improper SVG namespace scope handling in the sanitizer. A crafted payload using nested <svg> elements can bypass attribute sanitization and execute arbitrary JavaScript.\n\n### Patches\nThis issue affects TinyMCE 6.8.x-7.0.x. The vulnerability is fixed in TinyMCE 7.1.0 and later.\n\n### Workarounds\nNo official workaround available.\n\n### Acknowledgements\nTiny thanks [maple3142](https://github.com/maple3142) (<https://maple3142.net>) of DEVCORE for their help identifying this vulnerability.\n\n### References\nFix introduced in TinyMCE 7.1.0 though a rewrite of code causing the vulnerability.","severity":"high","score":8.7,"published":"2026-06-05T20:09:38.000Z","modified":"2026-09-10T03:51:09.366Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"npm","name":"tinymce","ranges":[{"events":[{"introduced":"6.8.0"},{"fixed":"7.1.0"}],"type":"SEMVER"}],"versions":[],"fixed":["7.1.0"]},{"ecosystem":"NuGet","name":"TinyMCE","ranges":[{"events":[{"introduced":"6.8.0"},{"fixed":"7.1.0"}],"type":"ECOSYSTEM"}],"versions":["6.8.0","6.8.1","6.8.2","6.8.3","6.8.4","6.8.5","6.8.6","7.0.0","7.0.1"],"fixed":["7.1.0"]},{"ecosystem":"Packagist","name":"tinymce/tinymce","ranges":[{"events":[{"introduced":"6.8.0"},{"fixed":"7.1.0"}],"type":"ECOSYSTEM"}],"versions":["6.8.0","6.8.1","6.8.2","6.8.3","6.8.4","6.8.5","6.8.6","7.0.0","7.0.1"],"fixed":["7.1.0"]}],"references":["https://github.com/tinymce/tinymce/security/advisories/GHSA-mh5m-5hw4-5c69","https://nvd.nist.gov/vuln/detail/CVE-2026-47760","https://github.com/tinymce/tinymce"],"sources":[{"name":"OSV","id":"GHSA-mh5m-5hw4-5c69","modified":"2026-09-10T03:51:09.366977370Z","url":"https://osv.dev/vulnerability/GHSA-mh5m-5hw4-5c69"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N","score":8.7}]}