CVE-2026-46725

Remote Code Execution in extension "Content Element Selector" (ceselector)

Published May 19, 2026 CVSS 4.0 · 9.2 Critical EPSS 2.6% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8x3j-439w-537c TYPO3 Remote Code Execution in extension "Content Element Selector" (ceselector)
History
Type Values Removed Values Added
First Time appeared Typo3
Typo3 extension "content Element Selector"
Vendors & Products Typo3
Typo3 extension "content Element Selector"
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title Remote Code Execution in extension "Content Element Selector" (ceselector)
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 9.2, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TYPO3
Published
Updated
May 19, 2026, 1:29 PM
Reserved
May 16, 2026, 9:55 AM
Status
Deferred
Published
May 19, 2026, 10:16 AM
Modified
Oct 26, 2026, 1:10 PM