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CVE-2026-56684

Estado: Pendiente de análisisAlta (7.5)—

Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.

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.

Vulnerabilidad use-after-free (CWE-416) en servicio remoto Valkey que requiere autenticación (PR:L) y puede permitir ejecución de código remoto o crash del servidor. Vector CVSS AV:N con PR:L apunta a T1210.

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 ManagementDisable or Remove Feature or ProgramVulnerability ScanningThreat Intelligence ProgramRestrict Web-Based ContentNetwork Segmentation

Tecnologías afectadas (1)

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

Lfprojects — ValkeyAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-56684",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-56684",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-18T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.6
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "valkey-io",
          "product": "valkey",
          "versions": [
            {
              "status": "affected",
              "version": "< 7.2.14"
            },
            {
              "status": "affected",
              "version": ">= 8.0.0, < 8.0.10"
            },
            {
              "status": "affected",
              "version": ">= 8.1.0, < 8.1.9"
            },
            {
              "status": "affected",
              "version": ">= 9.0.0, < 9.0.5"
            },
            {
              "status": "affected",
              "version": ">= 9.1.0, < 9.1.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-18T15:16:55.463",
  "references": [
    {
      "url": "https://github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80da58680a10fe3",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/pull/4234",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/releases/tag/7.2.14",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/releases/tag/8.0.10",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/releases/tag/8.1.9",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/releases/tag/9.0.5",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/releases/tag/9.1.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-99vh",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1."
    }
  ],
  "lastModified": "2026-09-18T20:05:53.723",
  "sourceIdentifier": "security-advisories@github.com"
}