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CVE-2026-34728

Phpmyfaq path traversal

8.7 HIGHPublic exploitEPSS 0.79%
  1. Published2 Apr 2026

Description

phpMyFAQ is an open source FAQ web application. Prior to version 4.1.1, the MediaBrowserController::index() method handles file deletion for the media browser. When the fileRemove action is triggered, the user-supplied name parameter is concatenated with the base upload directory path without any path traversal validation. The FILTER_SANITIZE_SPECIAL_CHARS filter only encodes HTML special characters (&, ', ", <, >) and characters with ASCII value < 32, and does not prevent directory traversal sequences like ../. Additionally, the endpoint does not validate CSRF tokens, making it exploitable via CSRF attacks. This issue has been patched in version 4.1.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:H

Affected products

Phpmyfaq< 4.1.1

Remediation

Fixed in
Phpmyfaq≥ 4.1.1

References

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Frequently asked

Is CVE-2026-34728 being actively exploited?

CVE-2026-34728 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.79%.

How severe is CVE-2026-34728?

CVE-2026-34728 has a CVSS 3.1 base score of 8.7, rated high. EPSS estimates a 0.79% probability of exploitation.

Which products are affected by CVE-2026-34728?

Affected products include Phpmyfaq.

How do I fix CVE-2026-34728?

Upgrade affected software to a fixed version, for example Phpmyfaq 4.1.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-34728 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.