Cross-site Scripting vulnerability in TinyMCE notificationManager.open API
CVE-2023-45819

6.1MEDIUM

Key Information:

Vendor

Tinymce

Status
Tinymce
Vendor
CVE Published:
19 October 2023

What is CVE-2023-45819?

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.

Affected Version(s)

tinymce < 5.10.8 < 5.10.8

tinymce >= 6.0.0, < 6.7.1 < 6.0.0, 6.7.1

References

https://github.com/tinymce/tinymce/security/advisories/GH...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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