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CVE-2024-58136 — Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class…

Key facts

CVE-2024-58136 is a Critical (9.0) vulnerability: Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-05-02), confirming active exploitation in the wild.

Actively exploited — on the CISA KEV catalog

CVE-2024-58136 is listed on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-05-02), confirming exploitation in the wild. Federal remediation deadline: 2025-05-23. Prioritise patching and deploy the detection and prevention rules below.
CVE CVE-2024-58136
Severity Critical (9.0)
CISA KEV Actively exploited (added 2025-05-02)
Detection / prevention —
PoC poc.py
Source 2024/CVE-2024-58136/

Details

English | 한국어

Description

Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class array key, a CVE-2024-4990 regression, as exploited in the wild in February through April 2025.

Vulnerability Details

Property Value
CVE ID CVE-2024-58136
CVSS Score 9.0

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2024/CVE-2024-58136/poc.py

Usage

# Run PoC against target
python3 poc.py --target <TARGET_URL>

# With authentication
python3 poc.py --target <TARGET_URL> --username <USER> --password <PASS>

⚠️ Warning: This PoC is for authorized security testing only. It uses detection-only techniques and does not exploit or damage target systems.

Test Lab

This repository includes a Docker-based test environment with both vulnerable and patched applications.

Quick Start

# Clone and navigate to CVE directory
cd CVE-2024-58136

# Start both applications
docker-compose up -d

# Run tests
./run-tests.sh    # Linux/Mac
./run-tests.ps1   # Windows PowerShell

Application Endpoints

Application URL Status
Vulnerable App http://localhost:8080 Shows vulnerability
Patched App http://localhost:8081 Demonstrates fix

Directory Structure

├── README.md           # English documentation
├── README_KO.md        # Korean documentation
├── poc.py              # PoC detection script
├── docker-compose.yml  # Container orchestration
├── run-tests.sh        # Linux/Mac test runner
├── run-tests.ps1       # Windows test runner
├── vulnerable-app/     # Vulnerable version
│   ├── app.py
│   ├── Dockerfile
│   └── requirements.txt
└── patched-app/        # Fixed version
    ├── app.py
    ├── Dockerfile
    └── requirements.txt

References

  • https://github.com/yiisoft/yii2/commit/40fe496eda529fd1d933b56a1022ec32d3cd0b12
  • https://github.com/yiisoft/yii2/compare/2.0.51...2.0.52
  • https://github.com/yiisoft/yii2/pull/20232
  • https://github.com/yiisoft/yii2/pull/20232#issuecomment-2252459709
  • https://www.yiiframework.com/news/709/please-upgrade-to-yii-2-0-52
  • https://sensepost.com/blog/2025/investigating-an-in-the-wild-campaign-using-rce-in-craftcms/
  • https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-58136

Generated by PoC Generator on 2026-07-08T22:57:36.170769564

Frequently asked questions

What is CVE-2024-58136?

CVE-2024-58136 is a Critical (9.0) vulnerability: Yii 2 before 2.0.52 mishandles the attaching of behavior that is defined by an __class…. This entry ships a detection-only PoC and a Docker test lab. It is on the CISA Known Exploited Vulnerabilities (KEV) catalog (added 2025-05-02), confirming active exploitation in the wild.

How do I detect CVE-2024-58136?

Run the detection-only PoC included with this entry against your Docker test lab to confirm whether a target is affected; pair it with your own IDS logging.

How do I block or mitigate CVE-2024-58136?

Upgrade to a fixed version per the vendor advisory; the NVD record lists the affected versions. Use the included PoC to verify your remediation.

Is CVE-2024-58136 actively exploited?

Yes. CVE-2024-58136 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, added 2025-05-02, which means it has been exploited in the wild. CISA set a federal remediation deadline of 2025-05-23. Prioritise patching and deploy the detection and prevention rules above.

For authorized security testing and research only. See the full source and NVD record.