TinyMCE 6.8.4

These are the Tiny Cloud and TinyMCE Enterprise release notes. For information on the latest community version of TinyMCE, see the TinyMCE Changelog.

Overview

TinyMCE 6.8.4 was released for TinyMCE Enterprise and Tiny Cloud on Wednesday, June 19th, 2024. These release notes provide an overview of the changes for TinyMCE 6.8.4, including:

Security fixes

TinyMCE 6.8.4 includes two fixes for the following security issues:

HTML entities that were double decoded in noscript elements caused an XSS vulnerability.

A cross-site scripting (XSS) vulnerability was discovered in TinyMCE’s content parsing code. This allowed specially crafted noscript elements containing malicious code to be executed when that content was loaded into the editor.

This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that content within noscript elements are properly parsed.

Tiny Technologies would like to thank Malav Khatri (devilbugbounty) and another reporter for discovering this vulnerability.

It was possible to inject XSS HTML that was not matching the regexp when using the noneditable_regexp option.

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.

This vulnerability has been patched in TinyMCE 7.2.0, TinyMCE 6.8.4 and TinyMCE 5.11.0 LTS by ensuring that, when using the noneditable_regexp option, any content within an attribute is properly verified to match the configured regular expression before being added.