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CVE-2026-104745 — The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to…

Key facts

CVE-2026-104745 is a High (8.1) vulnerability: The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to…. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2026-104745
Severity High (8.1)
Detection / prevention —
PoC poc.py
Source 2026/CVE-2026-104745/

Details

English | 한국어

Description

The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation via the alg_wc_ev_verify_email parameter in versions up to, and including, 3.3.0. The vulnerability exists because alg_wc_ev_generate_user_code() generates the per-user activation secret using wp_rand(100) when the plugin's 'Encoding method' is set to 'hashids', producing only ~101 possible values (~7 bits of entropy); the resulting token is a reversible Hashids encoding with no cryptographic MAC, and the unauthenticated verify() handler — hooked to init at PHP_INT_MAX with no nonce check and no rate limiting — accepts and acts on the attacker-controlled ?alg_wc_ev_verify_email= GET parameter directly. This makes it possible for unauthenticated attackers to gain authentication as any unverified WordPress account, including administrator-level accounts, by brute-forcing the trivially small activation code space via a forged verification URL. Exploitation requires that the 'Encoding method' setting be changed to 'hashids' (non-default), that the attacker recover or brute-force the Hashids salt (which defaults to an md5(time()) value set at first initialization), and that the target account's email address remain unverified.

Vulnerability Details

Property Value
CVE ID CVE-2026-104745
Type RCE
CVSS Score 8.1

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-104745/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-2026-104745

# 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/emails-verification-for-woocommerce/tags/3.3.0/includes/alg-wc-ev-functions.php#L331
  • https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L1258
  • https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L498
  • https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L784
  • https://plugins.trac.wordpress.org/changeset?reponame=&old=3744623%40emails-verification-for-woocommerce&new=3744623%40emails-verification-for-woocommerce
  • https://www.wordfence.com/threat-intel/vulnerabilities/id/6df7b3ed-a1e3-4df9-828e-95530661e27a?source=cve

Generated by PoC Generator on 2026-10-16T23:49:08.05297456

Frequently asked questions

What is CVE-2026-104745?

CVE-2026-104745 is a High (8.1) vulnerability: The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-104745?

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-2026-104745?

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.