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CVE Vulnerability Details :
CVE-2026-57996
PUBLISHED
More InfoOfficial Page
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
View Known Exploited Vulnerability (KEV) details
Published At-15 Jul, 2026 | 11:25
Updated At-16 Jul, 2026 | 15:16
Rejected At-
▼CVE Numbering Authority (CNA)
phpMyFAQ - Privilege Escalation via Missing SuperAdmin Guard in user/add Endpoint

phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and attacker-chosen credentials to create a SuperAdmin account, then authenticate as that account to achieve full instance takeover.

Affected Products
Vendor
Thorsten Rinne (phpMyFAQ)phpMyFAQ
Product
phpMyFAQ
Default Status
unaffected
Versions
Affected
  • From 0 before 4.1.5 (semver)
Unaffected
  • 4.1.5 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-269Improper Privilege Management
Type: CWE
CWE ID: CWE-269
Description: Improper Privilege Management
Metrics
VersionBase scoreBase severityVector
4.08.7HIGH
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
3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Version: 4.0
Base score: 8.7
Base severity: HIGH
Vector:
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
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Yanchon918s
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
vendor-advisory
https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint
third-party-advisory
Hyperlink: https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
Resource:
vendor-advisory
Hyperlink: https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
exploit
Hyperlink: https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9
Resource:
exploit
Details not found