CVE-2019-19849: TYPO3

High severity, CVSS 8.8. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered in TYPO3 before 8.7.30, 9.x before 9.5.12, and 10.x before 10.2.2. It has been discovered that the classes QueryGenerator and QueryView are vulnerable to insecure deserialization. One exploitable scenario requires having the system extension ext:lowlevel (Backend Module: DB Check) installed, with a valid backend user who has administrator privileges. The other exploitable scenario requires having the system extension ext:sys_action installed, with a valid backend user who has limited privileges.

Affected products

• TYPO3 TYPO3: before 8.7.30 (fixed in 8.7.30); from 9.0.0, before 9.5.12 (fixed in 9.5.12); from 10.0.0, before 10.2.2 (fixed in 10.2.2)

Published 2019-12-17. Last modified 2026-06-17.