CVE-2026-46364Public exploitNetwork attack vector

Unauthenticated SQL injection via unescaped User-Agent header

Published May 15, 2026 · Updated May 15, 2026

SQL injection in phpMyFAQ before 4.1.2 allows remote attackers to read or alter database records through the public captcha API. BuiltinCaptcha::garbageCollector() and BuiltinCaptcha::saveCaptcha() insert the unescaped User-Agent header into DELETE and INSERT SQL strings. No authentication or user interaction is required; time-based blind queries expose credential hashes, admin tokens, and SMTP credentials.

CVSS severity9.8
Critical
EPSS probability1.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in phpMyFAQ before 4.1.2 allows remote attackers to read or alter database records through the public captcha API. BuiltinCaptcha::garbageCollector() and BuiltinCaptcha::saveCaptcha() insert the unescaped User-Agent header into DELETE and INSERT SQL strings. No authentication or user interaction is required; time-based blind queries expose credential hashes, admin tokens, and SMTP credentials.

The record

CVE
CVE-2026-46364
Published
May 15, 2026
Updated
May 15, 2026
Vendor
Thorsten Rinne
Product
phpMyFAQ
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 15, 2026CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Thorsten Rinne · phpMyFAQversion=0 <4.1.2

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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