XSS in TinyMCE

Description

A cross-site scripting (XSS) vulnerability was discovered in: the core parser and media plugin. The vulnerability allowed arbitrary JavaScript execution when inserting a specially crafted piece of content into the editor via the clipboard or APIs. This impacts all users who are using TinyMCE 4.9.9 or lower and TinyMCE 5.2.1 or lower.

Recommendation

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

• Affected version(s): **>= 5.0.0, < 5.2.2

  < 4.9.10**

• Patched version(s): **5.2.2

  4.9.10**

References

• GHSA-c78w-2gw7-gjv3
• CVE-2019-1010091
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6