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Medium 6.5Published Jul 27, 2026

CVE-2026-66399phpMyFAQ before 4.1.6 Privilege Escalation via Group Membership

Updated under an hour ago ()

Does this affect you?

It affects thorsten phpMyFAQ. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

phpMyFAQ before 4.1.6 contains a privilege escalation vulnerability in GroupController::updateMembers() that allows administrators with only group-management permissions to join privileged groups without verification of required rights. Attackers can add themselves to pre-existing groups holding user-management rights and immediately inherit those permissions to modify or delete user accounts.

CVSS
6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Weakness (CWE)
CWE-269
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
VulnCheck
NVD analysis
Deferred
Record last updated
Aug 18, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
thorsten phpMyFAQ
thorsten:phpmyfaq (from the name)
before 4.1.6; 4.1.6 not affected
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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