TinyMCE Cross-Site Scripting (XSS) vulnerability using sanitization bypass through nested SVGs
GHSA-mh5m-5hw4-5c69 · CVE-2026-47760
Published · Modified
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Description
Impact
TinyMCE 6.8.x contains an XSS vulnerability caused by improper SVG namespace scope handling in the sanitizer. A crafted payload using nested
Patches
This issue affects TinyMCE 6.8.x-7.0.x. The vulnerability is fixed in TinyMCE 7.1.0 and later.
Workarounds
No official workaround available.
Acknowledgements
Tiny thanks maple3142 (https://maple3142.net) of DEVCORE for their help identifying this vulnerability.
References
Fix introduced in TinyMCE 7.1.0 though a rewrite of code causing the vulnerability.
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