What is CVE-2025-59017?

CVE-2025-59017 is a high-severity vulnerability in Typo3, classified under Missing Authorization. CVSS score: 8.8/10. Published 2025-09-09.

How severe is CVE-2025-59017?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2025-59017 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Typo3

CVE-2025-59017

Missing authorization checks in the Backend Routing of TYPO3 CMS versions 9.0.0‑9.5.54, 10.0.0‑10.4.53, 11.0.0‑11.5.47, 12.0.0‑12.4.36, and 13.0.0‑13.4.17 allow backend users to directly invoke AJAX backend routes without having access to…

Vulnerability class: Broken Access Control

EPSS: 0.003 (19.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Typo3
Typo3 Cms — versions 9.0.0, 10.0.0, 11.0.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

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

Frequently asked questions

What is CVE-2025-59017?: CVE-2025-59017 is a high-severity vulnerability in Typo3, classified under Missing Authorization. CVSS score: 8.8/10. Published 2025-09-09.
How severe is CVE-2025-59017?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2025-59017 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.