Cleartext storage of sensitive information in TYPO3 - CVE-2026-6553
Published: April 22, 2026
Vulnerability identifier: #VU126822
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-6553
CWE-ID: CWE-312
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 gain access to potentially sensitive information.
The vulnerability exists due to cleartext storage of sensitive information in the backend user settings module (SetupModuleController). A remote attacker can gain access to secret tokens and keys.
How to mitigate CVE-2026-6553
Install updates from vendor's website.