CVE-2026-78572 — The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all…¶

Key facts

CVE-2026-78572 is a High (8.1) vulnerability: The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all…. This entry ships a detection-only PoC and a Docker test lab.


CVE	CVE-2026-78572
Severity	High (8.1)
Detection / prevention	—
PoC	poc.py
Source	2026/CVE-2026-78572/

Details¶

English | 한국어

Description¶

The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.6 via deserialization of untrusted input. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

Vulnerability Details¶

Property	Value
CVE ID	CVE-2026-78572
CVSS Score	8.1

Proof of Concept¶

Download¶

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-78572/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-2026-78572

# 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://patchstack.com/database/wordpress/plugin/kalles-addons/vulnerability/wordpress-kalles-addons-plugin-1-0-6-php-object-injection-vulnerability
https://www.wordfence.com/threat-intel/vulnerabilities/id/46474bf6-0906-4b94-8032-270991c5128d?source=cve

Generated by PoC Generator on 2026-08-26T00:17:41.195406767

Frequently asked questions¶

What is CVE-2026-78572?¶

CVE-2026-78572 is a High (8.1) vulnerability: The Kalles Addons plugin for WordPress is vulnerable to PHP Object Injection in all…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-78572?¶

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-2026-78572?¶

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

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