Deserialization in Typo3

CVE-2019-19849

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.013 (66.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Typo3
  • N/a — versions n/a

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2019-19849?
CVE-2019-19849 is a high-severity vulnerability in Typo3, classified under Deserialization of Untrusted Data. CVSS score: 8.8/10. Published 2019-12-17.
How severe is CVE-2019-19849?
High severity. CVSS v3 base score is 8.8 out of 10.