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

Quick assessment

Affected
TYPO3 Extension "Content Element Selector"
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

TYPO3 Extension Content Element Selector是TYPO3开源的一个TYPO3内容元素选择扩展。 TYPO3 Extension Content Element Selector存在代码问题漏洞，该漏洞源于扩展直接将攻击者控制的cookie传递给PHP的unserialize()而未安全处理输入，可能导致远程未认证攻击者提供特制序列化有效载荷触发PHP对象注入，导致远程代码执行。

AI Predicted 9.8 Difficulty: Easy EPSS 1.86% · P79

Public Exploits 1

Nuclei · 1 CVE-2026-46725.yaml [template]

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
TYPO3 Extension "Content Element Selector" 6.0.0< 6.0.1 affected
5.0.0< 5.0.1 affected
4.0.0< 4.0.2 affected
< 3.0.3 affected
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I. Basic Information for CVE-2026-46725

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Remote Code Execution in extension "Content Element Selector" (ceselector)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
TYPO3 Extension Content Element Selector 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3 Extension Content Element Selector是TYPO3开源的一个TYPO3内容元素选择扩展。 TYPO3 Extension Content Element Selector存在代码问题漏洞，该漏洞源于扩展直接将攻击者控制的cookie传递给PHP的unserialize()而未安全处理输入，可能导致远程未认证攻击者提供特制序列化有效载荷触发PHP对象注入，导致远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
TYPO3 Extension "Content Element Selector" 6.0.0 ~ 6.0.1 -

II. Public POCs for CVE-2026-46725

# POC Description Source Link Shenlong Link
1 TYPO3 extension contains a PHP Object Injection caused by passing attacker-controlled cookie to unserialize() without validation, letting remote unauthenticated attackers achieve remote code execution, exploit requires Persistent Mode: Static configuration. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-46725.yaml POC Details
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III. Intelligence Information for CVE-2026-46725

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Vendor Advisories for CVE-2026-46725 (1)

Same Patch Batch · TYPO3 · 2026-05-19 · 8 CVEs total

CVE-2026-46722 XML External Entity Injection in extension "Faceted Search" (ke_search)
CVE-2026-46721 Broken Access Control in extension "Frontend User Registration" (sf_register)
CVE-2026-46723 Information Disclosure in extension "Faceted Search" (ke_search)
CVE-2026-46724 Path Traversal in extension "Faceted Search" (ke_search)
CVE-2026-8726 SQL Injection in extension "News system" (news)
CVE-2026-8727 Remote Code Execution in extension "Site Crawler" (crawler)
CVE-2026-8827 SQL Injection in extension "Address List" (tt_address)

IV. Related Vulnerabilities

Same vendor: TYPO3
Same weakness: CWE-502

V. Comments for CVE-2026-46725

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