Fieldlevel access bypass in TYPO3 CMS 10-14 via defVals param
CVE-2025-59020 Published on January 13, 2026
TYPO3 CMS Allows Broken Access Control in Edit Document Controller
By exploiting the defVals parameter, attackers could bypass fieldlevel access checks during record creation in the TYPO3 backend. This gave them the ability to insert arbitrary data into prohibited exclude fields of a database table for which the user already has write permission for a reduced set of fields. This issue affects TYPO3 CMS versions 10.0.0-10.4.54, 11.0.0-11.5.48, 12.0.0-12.4.40, 13.0.0-13.4.22 and 14.0.0-14.0.1.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2025-59020 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2025-59020
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Affected Versions
TYPO3 CMS:- Version 10.0.0 and below 10.4.55 is affected.
- Version 11.0.0 and below 11.5.49 is affected.
- Version 12.0.0 and below 12.4.41 is affected.
- Version 13.0.0 and below 13.4.23 is affected.
- Version 14.0.0 and below 14.0.2 is affected.
Vulnerable Packages
The following package name and versions may be associated with CVE-2025-59020
| Package Manager | Vulnerable Package | Versions | Fixed In |
|---|---|---|---|
| composer | typo3/cms-backend | >= 14.0.0, <= 14.0.1 | 14.0.2 |
| composer | typo3/cms-backend | >= 13.0.0, <= 13.4.22 | 13.4.23 |
| composer | typo3/cms-backend | >= 12.0.0, <= 12.4.40 | 12.4.41 |
| composer | typo3/cms-backend | >= 11.0.0, <= 11.5.48 | 11.5.49 |
| composer | typo3/cms-backend | >= 10.0.0, <= 10.4.54 | 10.4.55 |
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.