CVE-2026-116675

Description

TinyMCE is an open source rich text editor. From 7.9.3 until 7.9.4 and from 8.5.1 until 8.9.3, the media plugin creates elements crafted through data-mce-object in the active document before sanitization. Those elements can execute malicious scripts during processing, resulting in stored cross-site scripting for users with the media plugin enabled. This issue is fixed in versions 8.9.3 and 7.9.4.

References

• https://github.com/tinymce/tinymce/commit/bd1ab5ef024c648c3f9c0b409e54a6c227c7d8a2
• https://github.com/tinymce/tinymce/releases/tag/8.9.3
• https://github.com/tinymce/tinymce/security/advisories/GHSA-mf2p-h6hf-fcwm
• https://www.tiny.cloud/docs/tinymce/7/7.9.4-release-notes/#overview
• https://www.tiny.cloud/docs/tinymce/latest/8.9.3-release-notes/#overview