- Component Type: TYPO3 CMS
- Subcomponent: Crypto (ext:core)
- Release Date: September 9, 2025
- Vulnerability Type: Insufficient Entropy
- Affected Versions: 12.0.0-12.4.36, 13.0.0-13.4.17
- Severity: Medium
- Suggested CVSS: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- References: CVE-2025-59015, CWE-331
Problem Description
By default, the Password Generation component creates a password that always begins with a deterministic three‑character prefix (lower‑case, upper‑case, digit). Consequently, the effective entropy of the generated passwords is lower than expected. Invocations that employ the random password rules are unaffected.
Solution
Update to TYPO3 versions 12.4.37 LTS, 13.4.18 LTS that fix the problem described.
Credits
Thanks to Mathias Brodala for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.
General Advice
Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list.
General Note
All security-related code changes are tagged so you can easily look them up in our review system.