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CVE-2026-57996

Estado: AplazadaAlta (8.7)—

phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and attacker-chosen credentials to create a SuperAdmin account, then authenticate as that account to achieve full instance takeover.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:N/PR:L sin UI:R indica acceso remoto con privilegios previos (admin delegado). La API REST permite crear cuentas SuperAdmin, escalando a control total (T1068) y acceso con credenciales falsas (T1078).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramPrivileged Account ManagementApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer Guidance

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Phpmyfaq — PhpmyfaqAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-57996",
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        "ssvcData": {
          "id": "CVE-2026-57996",
          "role": "CISA Coordinator",
          "options": [
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              "technicalImpact": "total"
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    "cvssMetricV31": [
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      }
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    "cvssMetricV40": [
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        "cvssData": {
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          "Automatable": "NOT_DEFINED",
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          "integrityRequirement": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "product": "phpMyFAQ",
          "versions": [
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              "version": "0",
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  "published": "2026-07-15T12:18:16.143",
  "references": [
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      "url": "https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-r2f4-v277-hvw9",
      "source": "disclosure@vulncheck.com"
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      "url": "https://www.vulncheck.com/advisories/phpmyfaq-privilege-escalation-via-missing-superadmin-guard-in-user-add-endpoint",
      "source": "disclosure@vulncheck.com"
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    {
      "lang": "en",
      "value": "phpMyFAQ before 4.1.5 contains a privilege escalation vulnerability in the user/add API endpoint that allows non-SuperAdmin administrators to create SuperAdmin accounts. A delegated administrator with USER_ADD/EDIT/DELETE permissions can call POST /admin/api/user/add with isSuperAdmin: true and attacker-chosen credentials to create a SuperAdmin account, then authenticate as that account to achieve full instance takeover."
    }
  ],
  "lastModified": "2026-07-16T16:19:14.350",
  "sourceIdentifier": "disclosure@vulncheck.com"
}