Information disclosure in TYPO3 - CVE-2026-49742
Published: June 18, 2026
Vulnerability identifier: #VU134850
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-49742
CWE-ID: CWE-200
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 excessive data output by the application in Clipboard. A remote user can insert arbitrary records and files into the TYPO3 clipboard and gain unauthorized access to sensitive information on the system.
How to mitigate CVE-2026-49742
Install updates from vendor's website.