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
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2.1%CVSS: 9.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

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
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
EPSS PROB
2.1%
EPSS %ILE
81st
KEV
Not listed

Published

May 15, 2026

Last Modified

May 28, 2026

Advisory Details (3)

Auto-updated Oct 8, 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
githubMentions a patch (unverified)🟡 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 rangeFix by version rangeDependents
phpmyfaq/phpmyfaq2.10.0-alpha ... 4.1.1 (170 versions)
  • every version up to 4.1.2: fixed in 4.1.2
—
thorsten/phpmyfaq2.10.0-alpha ... 4.1.1 (170 versions)
  • every version up to 4.1.2: fixed in 4.1.2
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 24× 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 229 total refreshes for this CVE.

  1. 2026-10-09 20:07 UTCEPSS rescore
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  1. 2026-09-08 22:00 UTCEPSS rescore
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  13. 2026-08-23 17:26 UTCEG score recompute
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  44. 2026-08-05 19:17 UTCEPSS rescore
  45. 2026-08-04 15:10 UTCEPSS rescore
  46. 2026-08-04 10:39 UTCEPSS rescore
  47. 2026-08-03 18:55 UTCEG score recompute
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  62. 2026-07-23 03:17 UTCEG score recompute
  63. 2026-07-22 14:08 UTCEPSS rescore
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  66. 2026-07-19 14:31 UTCEPSS rescore
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  68. 2026-07-18 10:04 UTCEPSS rescore
  69. 2026-07-18 00:59 UTCOSV refresh
  70. 2026-07-16 17:03 UTCEPSS rescore
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  73. 2026-07-13 22:30 UTCEPSS rescore
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  75. 2026-07-12 05:46 UTCEPSS rescore

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 product + 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 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 2.1% probability of exploitation in the next 30 days (81st percentile of EPSS-scored CVEs).
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?
A fix for CVE-2026-46364 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-46364 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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