CVE-2026-46364

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-05-15. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 2%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
74.6%
KEV
Not listed

Published

May 15, 2026

Last Modified

May 28, 2026

Advisory Details (3)

Auto-updated Jun 20, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github.
generic

phpMyFAQ - SQL Injection via User-Agent Header in BuiltinCaptcha | Advisories | VulnCheck

https://www.vulncheck.com/advisories/phpmyfaq-sql-injection-via-user-agent-header-in-builtincaptcha
github Patch Available🟡 PoC Available

Unauthenticated SQL injection via User-Agent header in BuiltinCaptcha · Advisory · thorsten/phpMyFAQ · GitHub

https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-289f-fq7w-6q2w
github_commit

commit b9f25109fddb (thorsten/phpMyFAQ)

Fix landed in thorsten/phpMyFAQ commit b9f25109fddb — awaiting tagged release

https://github.com/thorsten/phpMyFAQ/commit/b9f25109fddb38eee19987183798638d07943f92

Vendor Advisories for CVE-2026-46364(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(2 across 1 ecosystem)
Packagist(2)
PackageVulnerable rangeFixed inDependents
phpmyfaq/phpmyfaq2.10.0-alpha ... 4.1.1 (170 versions)4.1.2—
thorsten/phpmyfaq2.10.0-alpha ... 4.1.1 (170 versions)4.1.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 76× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 248 total refreshes for this CVE.

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Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-46364.yaml
    First seen Jan 1, 2026

    phpMyFAQ <= 4.1.1 - SQL Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46364?
CVE-2026-46364 is a critical vulnerability published on May 15, 2026. 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…
When was CVE-2026-46364 disclosed?
CVE-2026-46364 was first published in the National Vulnerability Database on May 15, 2026, with the most recent update on May 28, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46364 actively exploited?
CVE-2026-46364 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 74.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46364?
CVE-2026-46364 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-46364?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46364, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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