What is CVE-2025-59020?

CVE-2025-59020 is a medium-severity vulnerability in Typo3, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-01-13.

How severe is CVE-2025-59020?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Typo3

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 w…

Vulnerability class: Broken Access Control

EPSS: 0.003 (20.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

Affected products

Typo3
Typo3 Cms — versions 10.0.0, 11.0.0, 12.0.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

f4fb688c-4412-4426-b4b8-421ecf27b14a (vendor-advisory, Vendor Advisory)
f4fb688c-4412-4426-b4b8-421ecf27b14a (Patch, patch)
f4fb688c-4412-4426-b4b8-421ecf27b14a (Patch, patch)
f4fb688c-4412-4426-b4b8-421ecf27b14a (Patch, patch)

Frequently asked questions

What is CVE-2025-59020?: CVE-2025-59020 is a medium-severity vulnerability in Typo3, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-01-13.
How severe is CVE-2025-59020?: Medium severity. CVSS v3 base score is 6.5 out of 10.