CVE Catalog

CVE-2026-103895

HighCVSS 8.1
Published: Translated: NVD NIST

Summary

The miniOrange OTP Login plugin for WordPress (versions up to and including 5.5.8) is vulnerable to authentication bypass via the mo_by_pass_login() function. The mo_delay_otp_process() short-circuits the authentication flow before password validation, and the Delay OTP grace flag is stored in user meta without binding to the session, allowing an unauthenticated attacker to log in as any user, including administrators.

Risk Assessment

An attacker can gain full access to an administrator account, leading to complete site takeover. This requires OTP-only login and Delay OTP Verification to be enabled, and the target account must be within its configured Delay OTP interval.

Recommendation

Update the miniOrange OTP Login plugin to a version newer than 5.5.8 as soon as it becomes available. Until then, consider disabling Delay OTP Verification or OTP-only login.

Related vulnerabilities

Original NVD description (English source)

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 data from NVD (NIST) · CISA KEV · EPSS