CVE-2026-46725
CRITICALRemote Code Execution in extension "Content Element Selector" (ceselector)
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://typo3.org/security/advisory/typo3-ext-sa-2026-013
Scores
CVSS v4
9.2
EPSS
0.0035
EPSS Percentile
57.6%
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-502
Status
published
Products (4)
TYPO3/Extension "Content Element Selector"
< 3.0.3
TYPO3/Extension "Content Element Selector"
4.0.0 - 4.0.2
TYPO3/Extension "Content Element Selector"
5.0.0 - 5.0.1
TYPO3/Extension "Content Element Selector"
6.0.0 - 6.0.1
Published
May 19, 2026
Tracked Since
May 19, 2026