CVE-2026-34728: phpMyFAQ: Path Traversal - Arbitrary File Deletion in MediaBrowserController

CVE-2026-34728 · Severity: high · CVSS 8.7 · Published 2026-04-02

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.

Technologies: phpmyfaq/phpmyfaq (Packagist), Phpmyfaq. Vendors: Packagist, Phpmyfaq.

Quick answers

Is CVE-2026-34728 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-34728 being exploited in the wild.
How severe is CVE-2026-34728?
High severity, with a CVSS score of 8.7, published 2 April 2026.
Which products and versions are affected?
phpmyfaq/phpmyfaq (Packagist) ECOSYSTEM:introduced=0,fixed=4.1.1.
Is there a fix for CVE-2026-34728?
Yes. phpmyfaq/phpmyfaq (Packagist): upgrade to 4.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-34728?
Check whether you run phpmyfaq/phpmyfaq (Packagist) or Phpmyfaq at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • phpmyfaq/phpmyfaq (Packagist): upgrade to 4.1.1 or later
    composer require phpmyfaq/phpmyfaq:^4.1.1

Affected products

  • phpmyfaq/phpmyfaq (Packagist) ECOSYSTEM:introduced=0,fixed=4.1.1
  • Phpmyfaq

Identifiers

  • CVE-2026-34728
  • GHSA-38m8-xrfj-v38x

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