miniOrange OTP Login, Verification and SMS Notifications <= 5.5.8 — Unauthenticated Authentication Bypass via Delay OTP Grace State
CVE-2026-103895Published · Updated Action summary
Affected: ≤5.5.8Update to 5.6.0 or newer
All remediation steps- Severity
- High8.1
- CVSS
- 8.1CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-287 Improper Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.4% chance in 30 days37th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
miniOrange OTP Login, Verification and SMS Notifications miniorange-otp-verification
- Affected≤ 5.5.8
- Patched in5.6.0
Update to 5.6.0 or newer.
You are affected if you run ≤ 5.5.8. Version 5.6.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under miniOrange OTP Login, Verification and SMS Notifications.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 5.6.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch miniOrange OTP Login, Verification and SMS Notifications to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Azgnt.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in miniOrange OTP Login, Verification and SMS Notifications
All 8| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.3 | Unauthenticated Privilege Escalation ≤5.5.7Update to 5.5.8 | CVE-2026-106610 | |
| Critical9.8 | Unauthenticated Authentication Bypass via 'mo_wp_login_intent' Parameter ≤5.5.5Update to 5.5.6 | CVE-2026-85984 | |
| Critical9.8 | Unauthenticated Privilege Escalation ≤5.5.1Update to 5.5.2 | CVE-2026-61967 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting ≤5.5.1Update to 5.5.2 | CVE-2026-61957 | |
| Critical9.8 | Authentication Bypass to Administrator Account Takeover via 'username_b' Parameter ≤5.5.1Update to 5.5.2 | CVE-2026-14245 |
- High7.3Unauthenticated Privilege Escalation
≤5.5.7Update to 5.5.8
- Critical9.8Unauthenticated Authentication Bypass via 'mo_wp_login_intent' Parameter
≤5.5.5Update to 5.5.6
- Critical9.8Unauthenticated Privilege Escalation
≤5.5.1Update to 5.5.2
- High7.2Unauthenticated Stored Cross-Site Scripting
≤5.5.1Update to 5.5.2
- Critical9.8Authentication Bypass to Administrator Account Takeover via 'username_b' Parameter
≤5.5.1Update to 5.5.2
Timeline
CVE published
Severity high, CVSS 8.1
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.