CVE-2026-55765

{
  "id": "CVE-2026-55765",
  "sourceIdentifier": "[email protected]",
  "published": "2026-08-20T22:17:22.487",
  "lastModified": "2026-10-26T10:10:00.140",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.28.4 and 1.29.2, CloudNativePG embedded cleartext role passwords in `ALTER ROLE` and `CREATE ROLE` statements generated by SetUserPassword in pkg/management/postgres/utils/roles.go and appendPasswordOption in internal/management/controller/roles/postgres.go. When pg_stat_statements was preloaded with track_utility enabled and an untrusted tenant held pg_monitor or pg_read_all_stats, the tenant could recover platform-managed superuser or application-owner passwords, reconnect through enabled superuser TCP access, and execute operating system commands in the database pod with `COPY ... FROM PROGRAM`. Clusters using SCRAM-SHA-256 verifiers in managed-role Secrets were not affected. This issue is fixed in versions 1.28.4, 1.29.2, and 1.30.0."
    },
    {
      "lang": "es",
      "value": "CloudNativePG es una plataforma diseñada para gestionar bases de datos PostgreSQL dentro de entornos Kubernetes. Antes de las versiones 1.28.4 y 1.29.2, CloudNativePG incrustaba contraseñas de rol en texto claro en las sentencias “ALTER ROLE” y “CREATE ROLE” generadas por SetUserPassword en pkg/management/postgres/utils/roles.go y appendPasswordOption en internal/management/controller/roles/postgres.go. Cuando pg_stat_statements se precargaba con track_utility habilitado y un inquilino no confiable poseía pg_monitor o pg_read_all_stats, el inquilino podía recuperar contraseñas de superusuario o de propietario de aplicación gestionadas por la plataforma, reconectarse a través del acceso TCP de superusuario habilitado y ejecutar comandos del sistema operativo en el pod de la base de datos con “COPY ... FROM PROGRAM”. Los clústeres que utilizaban verificadores SCRAM-SHA-256 en Secrets de rol gestionado no se vieron afectados. Este problema está solucionado en las versiones 1.28.4, 1.29.2 y 1.30.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "cloudnative-pg",
          "product": "cloudnative-pg",
          "versions": [
            {
              "version": "< 1.28.4",
              "status": "affected"
            },
            {
              "version": ">= 1.29.0, < 1.29.2",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-25T15:29:09.334896Z",
          "id": "CVE-2026-55765",
          "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-256"
        },
        {
          "lang": "en",
          "value": "CWE-522"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/2f0342747e1f160425b9d51753c0069b0d6117d5",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/3cd5af5d388c26758acf13c19ea806b4bcebb3fe",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/commit/9a13573dbe3d78721b7ea92141e6d2324a2c0ef0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10724",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-w3gf-xc94-wvmj",
      "source": "[email protected]"
    }
  ]
}