CVE-2026-59818

{
  "id": "CVE-2026-59818",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-08T21:16:54.503",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "etcd is a distributed key-value store for the data of a distributed system. Prior to 3.5.32 and 3.6.13, when etcd is configured with --listen-client-http-urls to split HTTP and gRPC client endpoints onto separate listeners, the --client-crl-file Certificate Revocation List is not enforced on the gRPC listener, allowing a client with a revoked certificate to authenticate successfully over gRPC. This issue is fixed in versions 3.5.32 and 3.6.13."
    },
    {
      "lang": "es",
      "value": "etcd es un almacén distribuido de clave-valor para los datos de un sistema distribuido. Antes de las versiones 3.5.32 y 3.6.13, cuando etcd está configurado con --listen-client-http-urls para dividir los puntos finales de cliente HTTP y gRPC en oyentes separados, la Lista de Revocación de Certificados --client-crl-file no se aplica en el oyente gRPC, permitiendo que un cliente con un certificado revocado se autentique con éxito a través de gRPC. Este problema está solucionado en las versiones 3.5.32 y 3.6.13."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "etcd-io",
          "product": "etcd",
          "versions": [
            {
              "version": ">= 3.6.0-alpha.0, < 3.6.13",
              "status": "affected"
            },
            {
              "version": "< 3.5.32",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.2
      },
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.2
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-09T13:13:02.654220Z",
          "id": "CVE-2026-59818",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "3.5.32",
              "matchCriteriaId": "5B21E29C-EB51-46BA-AFB6-F1B788A81FC2"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "3.6.0",
              "versionEndExcluding": "3.6.13",
              "matchCriteriaId": "B09A9BF8-8A36-4BC6-8145-D9E06883045E"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/etcd-io/etcd/commit/2308ce1578064641d4d67c40f0487309267d1bef",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/commit/24838af5a53dd0245adced920e42a9bf0e7a267f",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/commit/8221ae82bc25d4d55ca64382207b69be71038cbb",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/pull/22007",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/pull/22021",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/pull/22025",
      "source": "[email protected]",
      "tags": [
        "Issue Tracking",
        "Patch"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/releases/tag/v3.5.32",
      "source": "[email protected]",
      "tags": [
        "Product",
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/releases/tag/v3.6.13",
      "source": "[email protected]",
      "tags": [
        "Product",
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/etcd-io/etcd/security/advisories/GHSA-3wh4-j44w-pg92",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}