PT-2026-4550 · Phpmyfaq · Phpmyfaq

Brahim-Fouad · Published 2026-01-23 · Updated 2026-01-24 · CVE-2026-24420

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions phpMyFAQ versions 4.0.16 and below

Description A logged-in user without the necessary permission can download FAQ attachments. This is due to an incorrect permission check in the attachment.php file, where the presence of a permission key is incorrectly treated as authorization. The group and user permission logic also contains a flawed conditional expression that can allow unauthorized access. The API endpoint used for attachment download is /index.php?action=attachment&id=1. The vulnerable parameter is id. The flawed logic involves the expression ($groupPermission || ($groupPermission && $userPermission)) && isset($permission['dlattachment']), where isset() incorrectly validates the permission.

Recommendations Versions prior to 4.0.17 should be updated.

Exploit

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-24420

GHSA-7P9H-M7M8-VHHV

Affected Products

Phpmyfaq

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/24xxx/CVE-2026-24420.json · Exploit
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-7p9h-m7m8-vhhv · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-24420 · Security Note
• https://osv.dev/vulnerability/GHSA-7p9h-m7m8-vhhv · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-24420 · Vendor Advisory
• https://github.com/thorsten/phpMyFAQ · Note
• https://t.me/CVEtracker/42905 · Telegram Post
• https://twitter.com/CVEnew/status/2014995799047102635 · Twitter Post
• https://twitter.com/_cvereports/status/2014860775446180259 · Twitter Post
• https://t.me/cveNotify/149776 · Telegram Post