High severity · published Jun 21, 2026
CVE-2026-56396
phpMyFAQ - Privilege Escalation via Missing Authorization in editUser() and updateUserRights()
8.8
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PH
phpMyFAQ · phpMyFAQ
before 4.1.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56396
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56396
github.com
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-985r-q3qp-299h
www.vulncheck.com
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-authorization-in-edituser-and-updateuserrights
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