Overview
About vulnerability
Impact
Stored XSS vulnerability via forged mce:protected comments. Allows attackers to bypass sanitization and inject scripts that execute when content is restored. Impacts users who utilize the protect option.
Patches
Patched by validating decoded mce:protected content against configured protect regex rules before restoring. Users should upgrade to the latest patched version.
Workarounds
No official workaround available.
Fix
To avoid this vulnerability:
Upgrade to TinyMCE 8.5.1 or higher. Upgrade to TinyMCE 7.9.3 or higher. Upgrade 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).
Acknowledgements
Tiny thanks [Ivan Babenko](https://github.com/he1d3n) for their help identifying this vulnerability.
Details
- Affected product:
- tinymce
- Affected packages:
- tinymce @ 4.9.11 (+2 more)