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phpMyFAQ EUVDEUVD-2026-62444

| CVE-2026-75919 MEDIUM
Missing Authentication for Critical Function (CWE-306)
2026-08-19 VulnCheck GHSA-gjx5-c2mr-w8c7
Authentication Bypass Phpmyfaq
6.9
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:X/V:X/RE:X/U:X
vuln.today AI
8.7 HIGH

Maintenance mode must be active (AC:H); once it is, no auth is needed (PR:N); credential extraction and DB migration warrant S:C/C:H/I:H.

3.1 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
4.0 AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Patch available
Aug 19, 2026 - 15:17 EUVD
Analysis Generated
Aug 19, 2026 - 15:06 vuln.today

DescriptionCVE.org

phpMyFAQ before 4.1.7 contains an authentication bypass vulnerability in SetupController that allows unauthenticated attackers to run database migrations and create configuration backups when maintenance mode is enabled. Attackers can call POST /api/setup/update-database and POST /api/setup/backup endpoints to execute database updates, disable maintenance mode, and extract database credentials from generated ZIP archives.

AnalysisAI

Authentication bypass in phpMyFAQ's SetupController prior to version 4.1.7 allows unauthenticated network attackers to invoke privileged database setup API endpoints whenever the application is in maintenance mode. By sending unauthenticated POST requests to /api/setup/update-database and /api/setup/backup, an attacker can execute database schema migrations, toggle maintenance mode off, and retrieve plaintext database credentials bundled inside a generated ZIP archive. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify phpMyFAQ instance in maintenance mode
Delivery
Send unauthenticated POST to /api/setup/update-database
Exploit
Execute database schema migration
Execution
Send unauthenticated POST to /api/setup/backup
Persist
Download generated ZIP archive
Impact
Extract plaintext database credentials
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Vulnerability AssessmentAI

Exploitation Exploitation requires that a phpMyFAQ administrator has explicitly activated maintenance mode - a non-default operational state typically enabled only during version upgrades or database maintenance tasks. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The submitted CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) yields a score of 6.9 with impact limited to VA:L on the vulnerable system and no confidentiality or integrity impact - a rating that materially underrepresents the described attack outcomes. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker identifies a phpMyFAQ deployment by probing the /api/setup/ path or monitoring HTTP response headers and detects that the system is in maintenance mode (indicated by specific HTTP responses or application banners). The attacker then sends an unauthenticated POST request to /api/setup/backup, downloads the resulting ZIP archive, and extracts plaintext database credentials from the bundled configuration files. …
Remediation Upgrade to phpMyFAQ 4.1.7 or later, the vendor-released patch per advisory GHSA-f96w-7fx2-79c8, which corrects the missing authentication in SetupController. … Detailed patch versions, workarounds, and compensating controls in full report.
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EUVD-2026-62444 vulnerability details – vuln.today
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