CVE-2026-77771
Deferred Deferred - Pending Action

Authentication Bypass via Unlimited OTP Guesses in miniOrange 2FA WordPress Plugin

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: WPScan

Description
The miniOrange 2FA WordPress plugin before 6.3.1, miniOrange 2FA WordPress plugin before 19.3 does not scope its second-factor attempt limit to the account being attacked, keying it instead to an identifier the client supplies and can change at will, allowing an attacker who already knows a victim's password to make unlimited one-time-passcode guesses and defeat the second factor. A second validation endpoint applies no attempt limit at all.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-30
AI Q&A
2026-09-10
EPSS Evaluated
2026-09-29
NVD
CVE-2026-77771
EUVD
EUVD-2026-75264

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
miniorange miniorange_2fa to 6.3.1 (exc)
miniorange miniorange_2fa to 19.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

This vulnerability affects the miniOrange 2FA WordPress plugin before versions 6.3.1 and 19.3. It allows an attacker who knows a victim's password to bypass two-factor authentication by exploiting a flawed OTP attempt limit. The plugin uses a client-supplied identifier that can be changed to bypass account-specific limits, enabling unlimited OTP guesses. A second validation endpoint also lacks attempt limits.

Detection Guidance

Check the installed version of the miniOrange 2FA plugin in WordPress. If it is below 6.3.1 or 19.3, the system is vulnerable. Use WordPress admin panel or run: wp plugin list | grep miniorange-2fa in the WordPress directory.

Impact Analysis

If you use the affected miniOrange 2FA plugin, an attacker who already has your password could bypass the second authentication step. This means they could gain unauthorized access to your WordPress account or sensitive data. The lack of attempt limits makes brute-force attacks feasible.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating compliance requirements under GDPR and HIPAA. It undermines authentication controls, potentially resulting in data breaches and non-compliance penalties.

Mitigation Strategies

Update the miniOrange 2FA plugin to version 6.3.1 or later for the free version, or 19.3 or later for the pro version. Disable the plugin temporarily if an update is not immediately possible.

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