CVE-2025-59014 Denial of Service in TYPO3 Bookmark Toolbar

What is CVE-2025-59014?

CVE-2025-59014 is a medium-severity denial of service vulnerability in Typo3 Typo3, published on 9 Sep 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An uncaught exception in the Bookmark Toolbar of TYPO3 CMS versions 11.0.0–11.5.47, 12.0.0–12.4.36, and 13.0.0–13.4.17 lets administrator‑level backend users trigger a denial‑of‑service condition in the backend user interface by saving manipulated data in the bookmark toolbar.

Weakness: CWE-248

Which versions are affected by CVE-2025-59014?

6 open source packages ship an affected version, including typo3/cms-backend. It affects 1 product.

Products include Typo3 Typo3.

How do I fix CVE-2025-59014?

Upgrade typo3/cms-backend to a fixed version for your release line: 12.4.37 or 13.4.18.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-59014 being exploited?

There is no known exploitation of CVE-2025-59014 in the wild and no public exploit code.

Other vulnerabilities in Typo3 Typo3

• CVE-2009-0258 Indexed Search Engine for TYPO3 Command Execution via Metacharacter Injection Critical 10.0
• CVE-2011-3583 Typo3 SQL injection due to faulty prepared statements Critical 9.8
• CVE-2011-4628 Typo3 Authentication Bypass Critical 9.8
• CVE-2023-24814 Persisted Cross-Site Scripting in Frontend Rendering in typo3 High 8.8
• CVE-2021-41113 Cross-Site-Request-Forgery in Backend URI Handling in Typo3 High 8.8

All Typo3 Typo3 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xrcq-533q-8rxw.