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Vulnerability record · CVE-2026-56396 · published 21 June 2026

CVE-2026-56396: Missing authorization vulnerability

phpMyFAQ before 4.1.4 contains missing authorization vulnerabilities in editUser() and updateUserRights() endpoints that allow authenticated administrators to escalate privileges. Non-SuperAdmin users with edit_user permission can set is_superadmin flag or grant arbitrary rights to escalate to SuperAdmin access.

8.7 CVSS 4.0 High EPSS 0.44% · top 64.1% CWE-862 · Missing authorization Deferred
8.7CVSS 4.0 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
23 Jun 2026Last modified by NVD

Description

phpMyFAQ before 4.1.4 contains missing authorization vulnerabilities in editUser() and updateUserRights() endpoints that allow authenticated administrators to escalate privileges. Non-SuperAdmin users with edit_user permission can set is_superadmin flag or grant arbitrary rights to escalate to SuperAdmin access.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-985r-q3qp-299h
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-authorization-in-edituser-and-updateuserr
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-985r-q3qp-299h

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Source: NIST National Vulnerability Database (record CVE-2026-56396), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.