CVE-2026-111898 phpMyFAQ - Authentication Bypass

phpMyFAQ < 4.2.0-beta contains an authentication bypass caused by improper validation of Keycloak preferred_username or email in /auth/keycloak/authorize, letting attackers with colliding usernames or unverified emails gain superadmin privileges.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Authentication
Impact
Privilege Escalation, Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
17 October 2026
Updated
19 October 2026
Weakness
CWE-287

Vendor fix

Update to version 4.2.0-beta or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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