CVE-2025-59020

By exploiting the defVals parameter, attackers could bypass field‑level 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.

• https://github.com/TYPO3/typo3/commit/ac3f792bd5ab7c58153fc1075cb9e001c9cebe3b
  Patch
• https://github.com/TYPO3/typo3/commit/cd11a19958d823d12d028f9345b41739c7e70118
  Patch
• https://github.com/TYPO3/typo3/commit/fb98378a8fd30dd50d89a3d1a420780819f38232
  Patch
• https://typo3.org/security/advisory/typo3-core-sa-2026-001
  Vendor Advisory