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CVE-2026-22696

Estado: AplazadaCrítica (9.3)—

dcap-qvl implements the quote verification logic for DCAP (Data Center Attestation Primitives). A vulnerability present in versions prior to 0.3.9 involves a critical gap in the cryptographic verification process within the dcap-qvl. The library fetches QE Identity collateral (including qe_identity, qe_identity_signature, and qe_identity_issuer_chain) from the PCCS. However, it skips to verify the QE Identity signature against its certificate chain and does not enforce policy constraints on the QE Report.

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An attacker can forge the QE Identity data to whitelist a malicious or non-Intel Quoting Enclave. This allows the attacker to forge the QE and sign untrusted quotes that the verifier will accept as valid. Effectively, this bypasses the entire remote attestation security model, as the verifier can no longer trust the entity responsible for signing the quotes. All deployments utilizing the dcap-qvl library for SGX or TDX quote verification are affected. The vulnerability has been patched in dcap-qvl version 0.3.9. The fix implements the missing cryptographic verification for the QE Identity signature and enforces the required checks for MRSIGNER, ISVPRODID, and ISVSVN against the QE Report. Users of the `@phala/dcap-qvl-node` and `@phala/dcap-qvl-web` packages should switch to the pure JavaScript implementation, `@phala/dcap-qvl`. There are no known workarounds for this vulnerability. Users must upgrade to the patched version to ensure that QE Identity collateral is properly verified.

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.

Red sin autenticación (AV:N/PR:N/UI:N) permite forjar identidad QE e inyectar falsas cadenas de certificados en verificación remota, habilitando suplantación de intermediario y evasión de validación criptográfica.

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

Privileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkFilter Network TrafficVulnerability ScanningUser Training

Tecnologías afectadas (1)

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

Phala — Dcap-qvlAI

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-22696",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-22696",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-27T21:42:52.548855Z"
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    "cvssMetricV40": [
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          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 9.3,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
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          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "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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          "vendor": "Phala-Network",
          "product": "dcap-qvl",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.3.9"
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  "published": "2026-01-26T22:15:55.733",
  "references": [
    {
      "url": "https://github.com/Phala-Network/dcap-qvl/security/advisories/GHSA-796p-j2gh-9m2q",
      "source": "security-advisories@github.com"
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      "source": "security-advisories@github.com",
      "description": [
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          "value": "CWE-295"
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          "lang": "en",
          "value": "CWE-347"
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      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "dcap-qvl implements the quote verification logic for DCAP (Data Center Attestation Primitives). A vulnerability present in versions prior to 0.3.9 involves a critical gap in the cryptographic verification process within the dcap-qvl. The library fetches QE Identity collateral (including qe_identity, qe_identity_signature, and qe_identity_issuer_chain) from the PCCS. However, it skips to verify the QE Identity signature against its certificate chain and does not enforce policy constraints on the QE Report. An attacker can forge the QE Identity data to whitelist a malicious or non-Intel Quoting Enclave. This allows the attacker to forge the QE and sign untrusted quotes that the verifier will accept as valid. Effectively, this bypasses the entire remote attestation security model, as the verifier can no longer trust the entity responsible for signing the quotes. All deployments utilizing the dcap-qvl library for SGX or TDX quote verification are affected. The vulnerability has been patched in dcap-qvl version 0.3.9. The fix implements the missing cryptographic verification for the QE Identity signature and enforces the required checks for MRSIGNER, ISVPRODID, and ISVSVN against the QE Report. Users of the `@phala/dcap-qvl-node` and `@phala/dcap-qvl-web` packages should switch to the pure JavaScript implementation, `@phala/dcap-qvl`. There are no known workarounds for this vulnerability. Users must upgrade to the patched version to ensure that QE Identity collateral is properly verified."
    },
    {
      "lang": "es",
      "value": "dcap-qvl implementa la lógica de verificación de citas para DCAP (Data Center Attestation Primitives). Una vulnerabilidad presente en versiones anteriores a la 0.3.9 implica una brecha crítica en el proceso de verificación criptográfica dentro de dcap-qvl. La librería obtiene el colateral de Identidad QE (incluyendo qe_identity, qe_identity_signature y qe_identity_issuer_chain) del PCCS. Sin embargo, omite verificar la firma de Identidad QE contra su cadena de certificados y no aplica restricciones de política en el Informe QE. Un atacante puede falsificar los datos de Identidad QE para incluir en la lista blanca un Enclave de Citas malicioso o no Intel. Esto permite al atacante falsificar el QE y firmar citas no confiables que el verificador aceptará como válidas. Efectivamente, esto elude todo el modelo de seguridad de atestación remota, ya que el verificador ya no puede confiar en la entidad responsable de firmar las citas. Todas las implementaciones que utilizan la librería dcap-qvl para la verificación de citas SGX o TDX están afectadas. La vulnerabilidad ha sido parcheada en la versión 0.3.9 de dcap-qvl. La solución implementa la verificación criptográfica faltante para la firma de Identidad QE y aplica las comprobaciones requeridas para MRSIGNER, ISVPRODID e ISVSVN contra el Informe QE. Los usuarios de los paquetes '@phala/dcap-qvl-node' y '@phala/dcap-qvl-web' deberían cambiar a la implementación pura de JavaScript, '@phala/dcap-qvl'. No existen soluciones alternativas conocidas para esta vulnerabilidad. Los usuarios deben actualizar a la versión parcheada para asegurar que el colateral de Identidad QE sea verificado correctamente."
    }
  ],
  "lastModified": "2026-06-17T10:20:15.120",
  "sourceIdentifier": "security-advisories@github.com"
}