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CVE-2026-103895 — The miniOrange OTP Login, Verification and SMS Notifications plugin for WordPress is…

Key facts

CVE-2026-103895 is a High (8.1) vulnerability: The miniOrange OTP Login, Verification and SMS Notifications plugin for WordPress is…. This entry ships a detection-only PoC and a Docker test lab.
CVE CVE-2026-103895
Severity High (8.1)
Detection / prevention —
PoC poc.py
Source 2026/CVE-2026-103895/

Details

English | 한국어

Description

The miniOrange OTP Login, Verification and SMS Notifications plugin for WordPress is vulnerable to Authentication Bypass in versions up to, and including, 5.5.8 via the mo_by_pass_login() function. This is due to mo_delay_otp_process() short-circuiting the authentication flow before password validation or the administrator intent gate (added in 5.5.6) can run, combined with the Delay OTP grace flag (mov_last_verified_dttm) being stored as a user_meta row keyed solely by target user ID with no binding to the originating session, cookie, IP address, or device. This makes it possible for unauthenticated attackers to authenticate as any WordPress user — including administrators — by submitting only a known username with the mo_wp_login_intent=otp parameter and any non-empty password, thereby inheriting a legitimate user's open Delay OTP grace window without ever supplying correct credentials. Exploitation requires the site to have OTP-only login (wp_login_skip_password=1, wp_login_skip_password_fallback=0) and Delay OTP Verification (wp_login_delay_otp=1) enabled, and the target account must currently be within its configured Delay OTP interval.

Vulnerability Details

Property Value
CVE ID CVE-2026-103895
CVSS Score 8.1

Proof of Concept

Download

# Download PoC script
curl -O https://raw.githubusercontent.com/fankh/vulnerability-poc/main/2026/CVE-2026-103895/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-2026-103895

# 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/miniorange-otp-verification/tags/5.5.7/handler/forms/class-wploginform.php#L1050
  • https://plugins.trac.wordpress.org/browser/miniorange-otp-verification/tags/5.5.7/handler/forms/class-wploginform.php#L1170
  • https://plugins.trac.wordpress.org/browser/miniorange-otp-verification/tags/5.5.7/handler/forms/class-wploginform.php#L1519
  • https://plugins.trac.wordpress.org/browser/miniorange-otp-verification/tags/5.5.7/handler/forms/class-wploginform.php#L1573
  • https://plugins.trac.wordpress.org/browser/miniorange-otp-verification/tags/5.5.7/handler/forms/class-wploginform.php#L511
  • https://plugins.trac.wordpress.org/browser/miniorange-otp-verification?rev=3741261
  • https://plugins.trac.wordpress.org/changeset/3733803/miniorange-otp-verification/trunk/handler/forms/class-wploginform.php
  • https://www.wordfence.com/threat-intel/vulnerabilities/id/4a3a7097-e184-40d0-9c26-7c5638c937a5?source=cve

Generated by PoC Generator on 2026-10-16T22:19:50.931374235

Frequently asked questions

What is CVE-2026-103895?

CVE-2026-103895 is a High (8.1) vulnerability: The miniOrange OTP Login, Verification and SMS Notifications plugin for WordPress is…. This entry ships a detection-only PoC and a Docker test lab.

How do I detect CVE-2026-103895?

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-2026-103895?

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.