CVE-2026-75816 — The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Authentication…¶
Key facts
CVE-2026-75816 is a Critical (9.8) vulnerability: The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Authentication…. This entry ships a detection-only PoC and a Docker test lab.
| CVE | CVE-2026-75816 |
| Severity | Critical (9.8) |
| Detection / prevention | — |
| PoC | poc.py |
| Source | 2026/CVE-2026-75816/ |
Details¶
English | 한국어
Description¶
The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Authentication Bypass to Account Takeover in all versions up to, and including, 3.29.12. This is due to the pre_update_value function lacking any capability or ownership check, and ActionPost::conditions_logic() short-circuiting its current_user_can('edit_post') authorization gate whenever the post ID is non-numeric — such as the string user_1 — allowing unauthenticated form submissions to be routed to arbitrary user records without restriction. This makes it possible for unauthenticated attackers to overwrite any user's registered email address, including an administrator's, and then leverage WordPress's native password-reset flow to fully take over the targeted account.
Vulnerability Details¶
| Property | Value |
|---|---|
| CVE ID | CVE-2026-75816 |
| CVSS Score | 9.8 |
Proof of Concept¶
Download¶
# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-75816/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-2026-75816
# 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://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/fields/user/class-user-email.php#L127
- https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L1001
- https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/actions/post.php#L1224
- https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/display.php#L26
- https://plugins.trac.wordpress.org/browser/acf-frontend-form-element/tags/3.29.10/main/frontend/forms/classes/submit.php#L125
- https://plugins.trac.wordpress.org/changeset/3664865/acf-frontend-form-element
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f1637a3b-7b0f-485d-9d19-4f711f8c671b?source=cve
Generated by PoC Generator on 2026-09-06T13:25:38.86144058
Frequently asked questions¶
What is CVE-2026-75816?¶
CVE-2026-75816 is a Critical (9.8) vulnerability: The Frontend Admin by DynamiApps plugin for WordPress is vulnerable to Authentication…. This entry ships a detection-only PoC and a Docker test lab.
How do I detect CVE-2026-75816?¶
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-2026-75816?¶
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.