Reported vulnerability

miniOrange OTP Login, Verification and SMS Notifications <= 5.5.8 - Unauthenticated Authentication Bypass via Delay OTP Grace State

Q: Which versions of miniOrange OTP Login, Verification and SMS Notifications are affected?

Wordfence lists these affected versions: Start version unspecified, through 5.5.8. Use the version checker above to compare your installed release with this report.

Q: Is a fix available for miniOrange OTP Login, Verification and SMS Notifications?

Wordfence reports a fix for this issue in miniOrange OTP Login, Verification and SMS Notifications. It lists these fixed versions: 5.6.0. Back up your website and test the recommended update before applying it to your live site.

Q: Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Published 15 Oct 2026

Updated 15 Oct 2026

CVE-2026-103895

Compare your installed software with the affected versions below. Follow the source’s remediation guidance and test an available update after taking a backup. A database entry describes a reported issue; it does not establish whether a particular website has been compromised.

Does this affect my version?

Check your installed version against this advisory. This compares the report’s version ranges and does not scan your website.

Wordfence advisory

high · CVSS 8.1

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.

Severity vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

miniOrange OTP Login, Verification and SMS Notifications

Software: plugin · miniorange-otp-verification
Affected versions: Start version unspecified, through 5.5.8
Fix availability: Fix available
Fixed versions: 5.6.0

Recommended action

Update to version 5.6.0, or a newer patched version

Further references (1)

wordfence.com/threat-intel/vulnerabilities/id/4a3a7097-e184-40d0-9c26-7c5638c937a5

Data sources and licences

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CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Read licence terms

Source: Wordfence

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Questions about this vulnerability

Which versions of miniOrange OTP Login, Verification and SMS Notifications are affected?

Wordfence lists these affected versions: Start version unspecified, through 5.5.8. Use the version checker above to compare your installed release with this report.

Is a fix available for miniOrange OTP Login, Verification and SMS Notifications?

Wordfence reports a fix for this issue in miniOrange OTP Login, Verification and SMS Notifications. It lists these fixed versions: 5.6.0. Back up your website and test the recommended update before applying it to your live site.

Where can I find my installed plugin version?

In WordPress, open Plugins > Installed Plugins and find the version shown beneath the plugin name.

Does an affected version mean my website has been hacked?

An affected version means the installed release matches a vulnerability described in this report. It does not show whether anyone has exploited it on your website. The checker compares version numbers with stored reports; it does not inspect your website.

These reports cover at least one of the same plugins, themes or WordPress core. Check each report’s affected versions separately.

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