---
id: "CVE-2026-103895"
kind: "vulnerability"
aliases: ["CVE-2026-103895"]
title: "miniOrange OTP Login WordPress plugin: authentication bypass lets attackers log in as any user"
severity: "high"
cvss: 8.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "self-hosted", "wordpress", "wordpress-plugin"]
not_affected_if: ["default-config", "managed-hosting"]
published_at: "2026-10-16T05:17:28+00:00"
first_seen_at: "2026-10-23T21:57:12+00:00"
updated_at: "2026-10-25T03:07:51+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103895", "first_seen_at": "2026-10-23T21:57:12+00:00"}]
---

# miniOrange OTP Login WordPress plugin: authentication bypass lets attackers log in as any user

Versions up to and including 5.5.8 of the miniOrange OTP Login plugin let an unauthenticated attacker submit only a known username with the mo_wp_login_intent=otp parameter and any non-empty password. The attacker then inherits a legitimate user's open Delay OTP grace window and is logged in as that user, including administrators.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed plugin version in the WordPress admin plugin list or in `wp-content/plugins/` against `5.5.8`.
- Check whether the settings `wp_login_skip_password` is `1`, `wp_login_skip_password_fallback` is `0`, and `wp_login_delay_otp` is `1` in the plugin configuration.

## Fix

- Update the miniOrange OTP Login, Verification and SMS Notifications plugin to a version later than `5.5.8`; the sources do not name the fixed version, so check the plugin page.
- Until updated, disable Delay OTP Verification or re-enable password login (turn off OTP-only login) to remove the exploitable configuration.

## Timeline

- 2026-10-23T21:57:12+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-103895

## From the sources

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.

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