High severity · published Oct 17, 2026
CVE-2026-111909
phpMyFAQ before 4.1.9 Missing Authorization Allows Superadmin Deletion via deleteUser API
8.1
CVSS
0.3%
EPSS
No
On KEV
Description
phpMyFAQ before 4.1.9 contains a missing authorization vulnerability in the deleteUser() API that allows authenticated non-superadmin users with delete_user permission to delete superadmin accounts. Attackers can send a DELETE request to /admin/api/user/delete with a superadmin's userId other than 1, removing administrative access and accountability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · thorsten
before 4.1.9 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-111909
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-111909
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-7j43-ww55-pm3g
www.vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-missing-authorization-allows-superadmin-deletion-via-deleteuser-api
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