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Vulnerability record · CVE-2026-66397 · published 27 July 2026

CVE-2026-66397: Path traversal vulnerability

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.

8.6 CVSS 4.0 High EPSS 0.49% · top 60.6% CWE-22 · Path traversal Deferred
8.6CVSS 4.0 base score
0.49%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
28 Jul 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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-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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Source: NIST National Vulnerability Database (record CVE-2026-66397), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.