CVE-2026-126294
Deferred Deferred - Pending Action

Grav Login Plugin Authentication Bypass via Password-Only Login

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: VulnCheck

Description
Grav Login plugin before 3.11.0 contains an authentication bypass vulnerability that allows attackers with an account password to skip two-factor verification when the global twofa_enabled setting is off. Attackers can sign in through the /login form, remember-me cookie, or magic link to obtain a session the API plugin accepts, gaining full account permissions including super-admin control.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-126294
EUVD
EUVD-2026-125227

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
grav login_plugin to 3.11.0 (exc)
getgrav grav_login_plugin to 3.11.0 (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

The Grav Login plugin before version 3.11.0 has an authentication bypass flaw. When the global two-factor authentication setting is disabled, attackers with a valid account password can skip two-factor verification. They can log in via the /login form, remember-me cookie, or magic link to gain a session accepted by the API plugin, allowing full account access including super-admin privileges.

Detection Guidance

Check if the Grav Login plugin version is below 3.11.0. Use commands like 'composer show grav/login-plugin' or inspect the plugin files for version details. Verify if two-factor authentication is disabled globally while user accounts have passwords set.

Impact Analysis

Attackers could gain unauthorized access to your Grav account, bypassing security measures. This could lead to data theft, unauthorized modifications, or complete system compromise if the account has super-admin permissions. Even non-admin accounts could be exploited for lateral movement within a system.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations, legal penalties, and reputational damage due to potential data breaches resulting from this flaw.

Mitigation Strategies

Update the Grav Login plugin to version 3.11.0 or higher immediately. Enable two-factor authentication globally if it is currently disabled. Review all user accounts for unauthorized access and reset passwords if necessary.

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