Vulnerability Description
TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s Notification Manager API. The vulnerability exploits TinyMCE's unfiltered notification system, which is used in error handling. The conditions for this exploit requires carefully crafted malicious content to have been inserted into the editor and a notification to have been triggered. When a notification was opened, the HTML within the text argument was displayed unfiltered in the notification. The vulnerability allowed arbitrary JavaScript execution when an notification presented in the TinyMCE UI for the current user. This issue could also be exploited by any integration which uses a TinyMCE notification to display unfiltered HTML content. This vulnerability has been patched in TinyMCE 5.10.8 and TinyMCE 6.7.1 by ensuring that the HTML displayed in the notification is sanitized, preventing the exploit. Users are advised to upgrade. There are no known workarounds for this vulnerability.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tiny | Tinymce | < 5.10.8 |
Related Weaknesses (CWE)
References
- https://github.com/tinymce/tinymce/security/advisories/GHSA-hgqx-r2hp-jr38Vendor Advisory
- https://github.com/tinymce/tinymce/security/advisories/GHSA-hgqx-r2hp-jr38Vendor Advisory
FAQ
What is CVE-2023-45819?
CVE-2023-45819 is a vulnerability with a CVSS score of 6.1 (MEDIUM). TinyMCE is an open source rich text editor. A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s Notification Manager API. The vulnerability exploits TinyMCE's unfiltered notificatio...
How severe is CVE-2023-45819?
CVE-2023-45819 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-45819?
Check the references section above for vendor advisories and patch information. Affected products include: Tiny Tinymce.