CVE-2026-46725 CRITICAL

CVE-2026-46725: Remote Code Execution in extension "Content Element Selector" (ceselector)

Vendor Typo3
Product Extension "Content Element Selector"
Weakness CWE-502 · Unsafe deserialization
Published May 19, 2026
Last update May 19, 2026
View on NVD All CVEs

CVSS base score

9.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 19, 2026 CVE published
May 19, 2026 Record updated