PT-2026-47565 · Packagist · Phpmyfaq/Phpmyfaq+1

Published 2026-05-15 · Updated 2026-05-15

OSV

CVSS v3.1

9.8

Critical

Base vector

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

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-289f-fq7w-6q2w. This link is maintained to preserve external references.

Original Description

phpMyFAQ before 4.1.2 contains an unauthenticated SQL injection vulnerability in BuiltinCaptcha::garbageCollector() and BuiltinCaptcha::saveCaptcha() methods that interpolate unsanitized User-Agent headers into DELETE and INSERT queries. Unauthenticated attackers can exploit the public GET /api/captcha endpoint by crafting malicious User-Agent headers to perform time-based blind SQL injection, extracting sensitive data including user credentials, admin tokens, and SMTP credentials from the database.

Fix

SQL injection

Weakness Enumeration

CWE-89

Related Identifiers

GHSA-CH9Q-C9MP-J5GQ

Affected Products

Phpmyfaq/Phpmyfaq

Thorsten/Phpmyfaq

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-46364 · Security Note
• https://osv.dev/vulnerability/GHSA-ch9q-c9mp-j5gq · Vendor Advisory
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-289f-fq7w-6q2w · Note
• https://github.com/thorsten/phpMyFAQ/commit/b9f25109fddb38eee19987183798638d07943f92 · Note
• https://vulncheck.com/advisories/phpmyfaq-sql-injection-via-user-agent-header-in-builtincaptcha · Note