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GHSA-9hcv-j9pv-qmph: TinyMCE Cross-Site Scripting (XSS) vulnerability using noneditable_regexp option

June 19, 2024

A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content extraction code. When using the noneditable_regexp option, specially crafted HTML attributes containing malicious code were able to be executed when content was extracted from the editor.

References

  • github.com/advisories/GHSA-9hcv-j9pv-qmph
  • github.com/tinymce/tinymce
  • github.com/tinymce/tinymce/security/advisories/GHSA-9hcv-j9pv-qmph
  • www.tiny.cloud/docs/tinymce/6/6.8.4-release-notes/
  • www.tiny.cloud/docs/tinymce/latest/7.2-release-notes/

Code Behaviors & Features

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Affected versions

All versions before 5.11.0, all versions starting from 6.0.0 before 6.8.4, all versions starting from 7.0.0 before 7.2.0

Fixed versions

  • 5.11.0
  • 6.8.4
  • 7.2.0

Solution

Upgrade to versions 5.11.0, 6.8.4, 7.2.0 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

npm/tinymce/GHSA-9hcv-j9pv-qmph.yml

Spotted a mistake? Edit the file on GitLab.

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