CVE-2009-0256: TYPO3

High severity, CVSS 7.5. EPSS: 1.8% chance of exploitation in the next 30 days.

Session fixation vulnerability in the authentication library in TYPO3 4.0.0 through 4.0.9, 4.1.0 through 4.1.7, and 4.2.0 through 4.2.3 allows remote attackers to hijack web sessions via unspecified vectors related to (1) frontend and (2) backend authentication.

Affected products

• TYPO3 TYPO3: version 4.0 only; version 4.0.1 only; version 4.0.2 only; version 4.0.3 only; version 4.0.4 only; version 4.0.5 only; …

Published 2009-01-22. Last modified 2026-06-16.