CVE-2026-46725
Published:May 19, 2026
Updated:June 11, 2026
The extension passes an attacker-controlled cookie directly to PHP's unserialize() without safely processing the input. A remote, unauthenticated attacker can supply a crafted serialized payload to trigger PHP Object Injection, leading to Remote Code Execution on the TYPO3 server. Exploitation requires the content element to be configured with "Persistent Mode: Static" in the plugin settings.
Affected Packages
mmc/ceselector (PHP):
Affected version(s) >=3.0.0 <3.0.3Fix Suggestion:
Update to version 3.0.3mmc/ceselector (PHP):
Affected version(s) =6.0.0 <6.0.1Fix Suggestion:
Update to version 6.0.1mmc/ceselector (PHP):
Affected version(s) >=4.0.0 <4.0.2Fix Suggestion:
Update to version 4.0.2mmc/ceselector (PHP):
Affected version(s) =5.0.0 <5.0.1Fix Suggestion:
Update to version 5.0.1Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
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:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
3.27