What’s Vulnerable › Vulnerabilities

CVE-2026-47762: TinyMCE Cross-Site Scripting (XSS) vulnerability through `mce:protected` comments

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-28 · updated 2026-10-14
• Weakness: CWE-79

Description

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 via forged mce:protected comments. Allows attackers to bypass sanitization and inject scripts that execute when content is restored. Impacts users who utilize the protect option. This vulnerability is fixed in 5.11.1, 7.9.3, and 8.5.1.

Affected products

• tinymce: before 5.11.1; from 6.0.0 before 7.9.3; from 8.0.0 before 8.5.1 — fixed in 5.11.1, 7.9.3, 8.5.1

How to fix

Upgrade to a fixed version: tinymce 5.11.1, 7.9.3, 8.5.1. Check the vendor advisory for mitigations.

References

• https://github.com/tinymce/tinymce/security/advisories/GHSA-v98h-vmpc-fpqv
• https://www.tiny.cloud/docs/tinymce/7/7.9.3-release-notes/#overview
• https://www.tiny.cloud/docs/tinymce/8/8.5.1-release-notes/#overview

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