What’s Vulnerable › Vulnerabilities

CVE-2024-21911: Cross-site scripting vulnerability in TinyMCE

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-01-03 · updated 2026-07-14
• Weakness: CWE-79

Description

TinyMCE versions before 5.6.0 are affected by a stored cross-site scripting vulnerability. An unauthenticated and remote attacker could insert crafted HTML into the editor resulting in arbitrary JavaScript execution in another user's browser.

Affected products

• tinymce: before 5.6.0 — fixed in 5.6.0

How to fix

Upgrade to a fixed version: tinymce 5.6.0. Check the vendor advisory for mitigations.

References

• https://github.com/advisories/GHSA-w7jx-j77m-wp65
• https://github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65
• https://vulncheck.com/advisories/vc-advisory-GHSA-w7jx-j77m-wp65
• https://www.npmjs.com/package/tinymce
• https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes
• https://github.com/advisories/GHSA-w7jx-j77m-wp65
• https://github.com/tinymce/tinymce/security/advisories/GHSA-w7jx-j77m-wp65
• https://vulncheck.com/advisories/vc-advisory-GHSA-w7jx-j77m-wp65
• https://www.npmjs.com/package/tinymce
• https://www.tiny.cloud/docs/release-notes/release-notes56/#securityfixes

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