CVE-2026-111909

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 4.0

7.2CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 19% of CVEs (scores of 2026-10-25)

CWE

CWE-269

Published

2026-10-17

Modified

2026-10-18

Record from

the NVD, synced 2026-10-19

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-7j43-ww55-pm3g
• https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-missing-authorization-allows-superadmin-deletion-via-deleteuser-api

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