CVE-2020-11067
Published:May 13, 2020
Updated:September 01, 2026
In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
Affected Packages
typo3/cms-core (PHP):
Affected version(s) >=v10.0.0 <v10.4.2Fix Suggestion:
Update to version v10.4.2typo3/cms (PHP):
Affected version(s) >=v9.0.0 <v9.5.17Fix Suggestion:
Update to version v9.5.17typo3/cms-core (PHP):
Affected version(s) >=v9.0.0 <v9.5.17Fix Suggestion:
Update to version v9.5.17typo3/cms (PHP):
Affected version(s) >=v10.0.0 <v10.4.2Fix Suggestion:
Update to version v10.4.2Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
1.99