What is CVE-2025-59021?

CVE-2025-59021 is a medium-severity missing authorization vulnerability in typo3/cms-redirects (composer), affecting versions >= 14.0.0, <= 14.0.1. It is fixed in 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. The application does not perform an authorization check before performing a sensitive operation.

Which versions of typo3/cms-redirects are affected by CVE-2025-59021?

typo3/cms-redirects (composer) versions >= 14.0.0, <= 14.0.1 is affected.

Is there a fix for CVE-2025-59021?

Yes. CVE-2025-59021 is fixed in 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. Upgrade to this version or later.

Is CVE-2025-59021 exploitable, and should I be worried?

Whether CVE-2025-59021 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2025-59021 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

How do I fix CVE-2025-59021?

Upgrade: typo3/cms-redirects to 14.0.2 or later, typo3/cms-redirects to 13.4.23 or later, typo3/cms-redirects to 12.4.41 or later, typo3/cms-redirects to 11.5.49 or later, typo3/cms-redirects to 10.4.55 or later.

CVE-2025-59021 in typo3/cms-redirects

Q: Which versions of typo3/cms-redirects are affected by CVE-2025-59021?

typo3/cms-redirects (composer) versions >= 14.0.0, <= 14.0.1 is affected.

Q: Is there a fix for CVE-2025-59021?

Yes. CVE-2025-59021 is fixed in 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. Upgrade to this version or later.

Q: Is CVE-2025-59021 exploitable, and should I be worried?

Whether CVE-2025-59021 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

Q: What actually determines whether CVE-2025-59021 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

Q: How do I fix CVE-2025-59021?

Upgrade: typo3/cms-redirects to 14.0.2 or later, typo3/cms-redirects to 13.4.23 or later, typo3/cms-redirects to 12.4.41 or later, typo3/cms-redirects to 11.5.49 or later, typo3/cms-redirects to 10.4.55 or later.

Summary

TYPO3 CMS Allows Broken Access Control in Redirects Module

Problem

Backend users with access to the redirects module and write permission on the sys_redirect table were able to read, create, and modify any redirect record - without restriction to the user’s own file‑mounts or web‑mounts. This allowed attackers to insert or alter redirects pointing to arbitrary URLs - facilitating phishing or other malicious redirect attacks.

Credits

Thanks to Georg Dümmler for reporting this issue, and to TYPO3 security team member Elias Häußler for fixing it.

References

TYPO3-CORE-SA-2026-002

Impact

The application does not perform an authorization check before performing a sensitive operation. Typical impact: unauthorized access to restricted functionality or data.

Affected versions

typo3/cms-redirects (>= 14.0.0, <= 14.0.1) typo3/cms-redirects (>= 13.0.0, <= 13.4.22) typo3/cms-redirects (>= 12.0.0, <= 12.4.40) typo3/cms-redirects (>= 11.0.0, <= 11.5.48) typo3/cms-redirects (>= 10.0.0, <= 10.4.54)

Security releases

typo3/cms-redirects → 14.0.2 (composer) typo3/cms-redirects → 13.4.23 (composer) typo3/cms-redirects → 12.4.41 (composer) typo3/cms-redirects → 11.5.49 (composer) typo3/cms-redirects → 10.4.55 (composer)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

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Remediation advice

Update to TYPO3 versions 10.4.55 ELTS, 11.5.49 ELTS, 12.4.41 LTS, 13.4.23 LTS, 14.0.2 that fix the problem described.

Frequently Asked Questions

What is CVE-2025-59021? CVE-2025-59021 is a medium-severity missing authorization vulnerability in typo3/cms-redirects (composer), affecting versions >= 14.0.0, <= 14.0.1. It is fixed in 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. The application does not perform an authorization check before performing a sensitive operation.
Which versions of typo3/cms-redirects are affected by CVE-2025-59021? typo3/cms-redirects (composer) versions >= 14.0.0, <= 14.0.1 is affected.
Is there a fix for CVE-2025-59021? Yes. CVE-2025-59021 is fixed in 14.0.2, 13.4.23, 12.4.41, 11.5.49, 10.4.55. Upgrade to this version or later.
Is CVE-2025-59021 exploitable, and should I be worried? Whether CVE-2025-59021 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2025-59021 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2025-59021?
- Upgrade typo3/cms-redirects to 14.0.2 or later
- Upgrade typo3/cms-redirects to 13.4.23 or later
- Upgrade typo3/cms-redirects to 12.4.41 or later
- Upgrade typo3/cms-redirects to 11.5.49 or later
- Upgrade typo3/cms-redirects to 10.4.55 or later