Missing Authorization in TYPO3 - CVE-2026-47343
Published: June 19, 2026
Vulnerability identifier: #VU134920
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-47343
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: TYPO3
Affected software:
TYPO3
TYPO3
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authorization checks.
The vulnerability exists due to improper authorization checks in File Abstraction Layer. A remote user can perform write operations on folders representing the root of an active file mount.
How to mitigate CVE-2026-47343
Install updates from vendor's website.