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CVE-2026-56737

CVE-2026-56737 · phpMyFAQ's two-factor authentication login bypasses the password factor

This page contains facts from public vulnerability sources. Check the original advisory before updating.

phpMyFAQ is an open source FAQ web application. Versions 3.2.0 through 4.1.5 contain an authentication bypass in its public two-factor authentication verification flow: an unauthenticated attacker can submit an account’s numeric user ID and a valid or brute-forced six-digit TOTP code without first authenticating with the account password, allowing takeover of any 2FA-enabled account, including administrator accounts. Version 4.1.6 is patched by binding TOTP verification to a session established after successful password authentication and limiting failed TOTP attempts. No official workaround is documented; affected installations should upgrade to 4.1.6 or later.

CVSS 8.1 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: php

Affected products and versions

  • phpmyfaq

    Versions
    • >= 3.2.0, < 4.1.6: Affected

    No fix published

  • thorsten/phpmyfaq Packagist

    Versions
    • 3.2.0
    • 3.2.1
    • 3.2.10
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.2.6
    • 3.2.7
    • 3.2.8
    • 3.2.9
    • 4.0.0
    • 4.0.0-RC
    • 4.0.0-RC.2
    • 4.0.0-RC.3
    • 4.0.0-RC.4
    • 4.0.0-RC.5
    • 4.0.0-alpha
    • 4.0.0-alpha.2
    • 4.0.0-alpha.3
    • 4.0.0-alpha.4
    • 4.0.0-beta
    • 4.0.0-beta.2
    • 4.0.1
    • 4.0.10
    • 4.0.11
    • 4.0.12
    • 4.0.13
    • 4.0.14
    • 4.0.15
    • 4.0.16
    • 4.0.18
    • 4.0.19
    • 4.0.2
    • 4.0.3
    • 4.0.4
    • 4.0.5
    • 4.0.6
    • 4.0.7
    • 4.0.8
    • 4.0.9
    • 4.1.0
    • 4.1.0-RC
    • 4.1.0-RC.2
    • 4.1.0-RC.4
    • 4.1.0-RC.5
    • 4.1.0-RC.6
    • 4.1.0-RC.7
    • 4.1.0-alpha
    • 4.1.0-alpha.2
    • 4.1.0-alpha.3
    • 4.1.0-beta
    • 4.1.0-beta.2
    • 4.1.1
    • 4.1.2
    • 4.1.3
    • 4.1.4
    • 4.1.5
    Affected ranges
    • ECOSYSTEM: ≥ 3.2.0, < 4.1.6

    Update to 4.1.6

  • phpmyfaq/phpmyfaq Packagist

    Versions
    • 3.2.0
    • 3.2.1
    • 3.2.10
    • 3.2.2
    • 3.2.3
    • 3.2.4
    • 3.2.5
    • 3.2.6
    • 3.2.7
    • 3.2.8
    • 3.2.9
    • 4.0.0
    • 4.0.0-RC
    • 4.0.0-RC.2
    • 4.0.0-RC.3
    • 4.0.0-RC.4
    • 4.0.0-RC.5
    • 4.0.0-alpha
    • 4.0.0-alpha.2
    • 4.0.0-alpha.3
    • 4.0.0-alpha.4
    • 4.0.0-beta
    • 4.0.0-beta.2
    • 4.0.1
    • 4.0.10
    • 4.0.11
    • 4.0.12
    • 4.0.13
    • 4.0.14
    • 4.0.15
    • 4.0.16
    • 4.0.18
    • 4.0.19
    • 4.0.2
    • 4.0.3
    • 4.0.4
    • 4.0.5
    • 4.0.6
    • 4.0.7
    • 4.0.8
    • 4.0.9
    • 4.1.0
    • 4.1.0-RC
    • 4.1.0-RC.2
    • 4.1.0-RC.4
    • 4.1.0-RC.5
    • 4.1.0-RC.6
    • 4.1.0-RC.7
    • 4.1.0-alpha
    • 4.1.0-alpha.2
    • 4.1.0-alpha.3
    • 4.1.0-beta
    • 4.1.0-beta.2
    • 4.1.1
    • 4.1.2
    • 4.1.3
    • 4.1.4
    • 4.1.5
    Affected ranges
    • ECOSYSTEM: ≥ 3.2.0, < 4.1.6

    Update to 4.1.6

Original sources

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