TinyMCE up to 5.11.0/6.8.6/7.9.2/8.5.0 cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in TinyMCE up to 5.11.0/6.8.6/7.9.2/8.5.0. This vulnerability affects unknown code. This manipulation causes cross site scripting. This vulnerability is tracked as CVE-2026-47761. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in TinyMCE up to 5.11.0/6.8.6/7.9.2/8.5.0. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

TinyMCE is an open source rich text editor. Prior to 5.11.1, 7.9.3, and 8.5.1, there is a stored XSS vulnerability in the media plugin. Attackers can inject malicious scripts via crafted data-mce-* attributes, which are executed when content is rendered. Impacts users of TinyMCE with the media plugin enabled. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-47761 since 05/20/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 317997 (Linux Distros Unpatched Vulnerability : CVE-2026-47761), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.11.1, 7.9.3 or 8.5.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (317997). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• TinyMCE

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11.0
• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4
• 6.8.5
• 6.8.6
• 7.9.0
• 7.9.1
• 7.9.2
• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5.0

Website

• Product: https://github.com/tinymce/tinymce/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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