CVE-2026-103895
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.43% probability · 37th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Source
- security@wordfence.com
EPSS moved from 0.4% on 16 October 2026 to 0.4% on 26 October 2026.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.