Vulnerability library
Security checkJuly 15, 2026

TinyMCE Cross-Site Scripting (XSS) vulnerability through `mce:protected` comments

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High severitynpmtinymce

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Description

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.

Recommendation

Update the tinymce package to the latest compatible version. Followings are version details:

  • Affected version(s): **<= 5.10.9 >= 8.0.0, < 8.5.1 >= 6.0.0, < 7.9.3**
  • Patched version(s): **8.5.1 7.9.3**

References

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See something that needs correcting? Let us knowUpdated July 15, 2026