CVE-2026-46364CRITICAL 9.8EPSS p66.8%

CVE-2026-46364CVE-2026-46364

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.

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS1.31% probability of exploitation · percentile 66.8% · 2026-06-19T12:03:05Z
Published2026-05-15
Last modified2026-05-18

Underlying weaknesses· 1

CWE-89

References

  1. https://github.com/thorsten/phpMyFAQ/commit/b9f25109fddb38eee19987183798638d07943f92
  2. https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-289f-fq7w-6q2w
  3. https://www.vulncheck.com/advisories/phpmyfaq-sql-injection-via-user-agent-header-in-builtincaptcha

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection')cwe-890%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.