What’s Vulnerable › Vulnerabilities

CVE-2026-66397: phpMyFAQ before 4.1.6 Path Traversal via category image deletion

• Severity: high (CVSS 8.6 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-27 · updated 2026-10-24
• Weakness: CWE-22

Description

phpMyFAQ before 4.1.6 fails to validate path traversal sequences in the existing_image field during category updates, allowing authenticated attackers to delete arbitrary files by exploiting insufficient sanitization in Image::delete(). Attackers can delete the database.php configuration file to disable the installation gate and access the public setup wizard to create new superadmin accounts.

Affected products

• thorsten phpMyFAQ: before 4.1.6 — fixed in 4.1.6

How to fix

Upgrade to a fixed version: thorsten phpMyFAQ 4.1.6. Check the vendor advisory for mitigations.

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-mh9w-5hr8-3272
• https://www.vulncheck.com/advisories/phpmyfaq-before-path-traversal-via-category-image-deletion
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-mh9w-5hr8-3272

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