CVE-2026-103895 Details
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.
A vulnerability allowing authentication bypass has been identified in the miniOrange OTP Login, Verification and SMS Notifications plugin for WordPress, affecting versions through 5.5.8. The issue arises in the 'mo_by_pass_login()' function, where the 'mo_delay_otp_process()' function interrupts the authentication process before password verification or the administrator intent gate can be applied. This vulnerability exploits the Delay OTP grace flag, which is stored as user metadata linked only to the user ID, without any connection to the session, cookie, IP address, or device. As a result, unauthenticated attackers can log in as any WordPress user, including administrators, by sending a known username, the 'mo_wp_login_intent=otp' parameter, and any non-empty password. This method takes advantage of an active Delay OTP grace period without requiring correct login credentials. The vulnerability is exploitable when OTP-only login and Delay OTP Verification are enabled, and the targeted user is within the Delay OTP interval.
Users are advised to update the miniOrange OTP Login, Verification and SMS Notifications plugin to version 5.6.0 or a newer patched version.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 16, 2026CISA-ADP
Assessed Oct 16, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| miniOrange OTP Login, Verification and SMS Notifications | <= 5.5.8 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 16, 2026 | CVE Modified | CISA-ADP |
| Oct 16, 2026 | New CVE Received | [email protected] |