CVE-2026-66397: 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
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.
Details
Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-66397
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-663970.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 25% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-66397 | coverage & exploitation status | NVD · CVE.org |
Recent advisories for phpMyFAQ
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- mediumCVE-2026-66399: phpMyFAQ before 4.1.6 contains a privilege escalation vulnerability in GroupController::update…nvd · 2026-07-27
- unknownCVE-2026-66398: phpMyFAQ before v4.1.6 contains a remote code execution vulnerability in the configuration API…nvd · 2026-07-27
- highCVE-2026-57996: phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoi…nvd · 2026-07-15
- mediumCVE-2026-57994: phpMyFAQ before 4.1.5 applies inconsistent active=yes and publication-date filtering across it…nvd · 2026-07-10
- lowCVE-2026-57961: phpMyFAQ before 4.1.5 contains a potential authenticated path traversal vulnerability in the c…nvd · 2026-07-10
- highCVE-2026-57995: phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in GroupController::update…nvd · 2026-06-30
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