CVE-2020-26228: TYPO3

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.

Affected products

• TYPO3 TYPO3: from 9.0.0, before 9.5.23 (fixed in 9.5.23); from 10.0.0, before 10.4.10 (fixed in 10.4.10)

Published 2020-11-23. Last modified 2026-06-17.