Is this vulnerability remotely exploitable over the internet?

Yes, but only through an authenticated administrative session. An attacker must first obtain or abuse administrator-level access to craft and store the malicious serialized payload via the Express Entry List block configuration.

What level of access is required to exploit this issue?

The vulnerability requires high-privilege access: specifically, the ability to log in as an administrator (or another role with equivalent privileges) who can create or modify Express Entry List blocks and set their configuration parameters.

What is the safest general fix pattern for this vulnerability class?

The most robust fix is to remove unsafe deserialization entirely from user- or admin-controlled data paths. Replace `unserialize()` with data-only formats such as JSON, enforce explicit schemas for configuration fields, and ensure that application logic does not rely on runtime instantiation of arbitrary objects from stored data.

Severity:

HIGH RISK

(7.2)

PHP Object Injection (CWE-502) in Concrete CMS Express Entry List Block Configuration

CVE-2026-3452

Published:

Mar 3, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Remote Code Execution

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CRITICAL RISK

CRITICAL

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SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Unsafe Deserialization / PHP Object Injection

CWE:

CWE-502

Impact:

Remote Code Execution by authenticated administrator via unsafe PHP deserialization

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Unsafe Deserialization / PHP Object Injection

CWE:

CWE-502

Impact:

Remote Code Execution by authenticated administrator via unsafe PHP deserialization

Severity:

HIGH RISK

(7.2)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

PHP Object Injection (CWE-502) in Concrete CMS Express Entry List Block Configuration

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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