CVE-2026-103895
Received Received - Intake

Authentication Bypass in miniOrange OTP Login WordPress Plugin

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Wordfence

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.

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Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-103895
EUVD
EUVD-2026-102638

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cyberlord92 miniOrange OTP Login, Verification and SMS Notifications 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

This WordPress plugin vulnerability allows unauthenticated attackers to bypass authentication and log in as any user, including administrators. It exploits a flaw in the OTP login process where a grace period flag is stored insecurely, letting attackers inherit access without valid credentials.

Detection Guidance

Check WordPress sites using the miniOrange OTP Login plugin versions up to 5.5.8. Inspect authentication logs for unusual login attempts with the mo_wp_login_intent=otp parameter and any non-empty password. Verify if OTP-only login and Delay OTP Verification are enabled.

Impact Analysis

Attackers could gain full control of your WordPress site, steal sensitive data, install malware, or deface content. If you use this plugin with OTP-only login and Delay OTP enabled, your site is at high risk of compromise.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or health data, violating GDPR and HIPAA requirements for data protection and access controls. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Update the miniOrange OTP Login plugin to the latest version. Disable OTP-only login and Delay OTP Verification if enabled. Review user accounts for unauthorized access. Monitor authentication logs for suspicious activity.

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