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CloudNativePG: Cleartext role passwords recorded in pg_stat_statements allow privileged tenant roles to recover the PostgreSQL superuser credential and achieve RCE in the database pod

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-55765
Confirmed fixed CVEs
Not specified
Updated in this feed
4 Nov 2026, 16:05 UTC · Revision 1

Source evidence

CloudNativePG: Cleartext role passwords recorded in pg_stat_statements allow privileged tenant roles to recover the PostgreSQL superuser credential and achieve RCE in the database pod

core-osv · Original source

Published 20 Aug 2026, 21:38 UTC

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.

osv:CVE-2026-55765
Complete source record
{
  "id": "a8e6dc47e09a03ad3024e7b3624e485b22dc37aad26a4c595f39e17176a5e944",
  "url": "https://osv.dev/vulnerability/CVE-2026-55765",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CloudNativePG: Cleartext role passwords recorded in pg_stat_statements allow privileged tenant roles to recover the PostgreSQL superuser credential and achieve RCE in the database pod",
    "summary": "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.",
    "evidence": "osv:CVE-2026-55765",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-55765",
      "aliases": [
        "CVE-2026-55765",
        "GHSA-w3gf-xc94-wvmj"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cloudnative-pg/cloudnative-pg",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "f74344b4d3a6d9fbe06748ba1747901f6077db2a"
                },
                {
                  "introduced": "23eae00cd7aad82978397798dd27b600eb25ae3d"
                },
                {
                  "fixed": "94ee3117858765c77d0dbfde381a037944a48a64"
                },
                {
                  "fixed": "2f0342747e1f160425b9d51753c0069b0d6117d5"
                },
                {
                  "fixed": "3cd5af5d388c26758acf13c19ea806b4bcebb3fe"
                },
                {
                  "fixed": "9a13573dbe3d78721b7ea92141e6d2324a2c0ef0"
                },
                {
                  "fixed": "4b5e244a7d031f67e025c83c1555e7726ecbbfa1"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.28.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.29.0"
                      },
                      {
                        "fixed": "1.29.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2f0342747e1f160425b9d51753c0069b0d6117d5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "3cd5af5d388c26758acf13c19ea806b4bcebb3fe"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9a13573dbe3d78721b7ea92141e6d2324a2c0ef0"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f74344b4d3a6d9fbe06748ba1747901f6077db2a"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.28.4"
                  },
                  {
                    "range": [
                      {
                        "fixed": "94ee3117858765c77d0dbfde381a037944a48a64"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.29.2"
                  },
                  {
                    "range": [
                      {
                        "fixed": "4b5e244a7d031f67e025c83c1555e7726ecbbfa1"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.30.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.28.3",
            "v1.29.1",
            "v1.28.2",
            "v1.29.0",
            "v1.28.1",
            "v1.28.0",
            "v1.28.0-rc2",
            "v1.28.0-rc1",
            "v1.27.0",
            "v1.27.0-rc1",
            "v1.26.0",
            "v1.26.0-rc3",
            "v1.26.0-rc2",
            "v1.26.0-rc1",
            "v1.25.0",
            "v1.25.0-rc1",
            "v1.24.0",
            "v1.24.0-rc1",
            "v1.23.0",
            "v1.21.0",
            "v1.20.0",
            "v1.19.0",
            "v1.18.0",
            "v1.17.0",
            "v1.15.1",
            "v1.15.0",
            "v1.14.0",
            "v1.13.0",
            "v1.12.0",
            "v1.11.0",
            "v1.10.0",
            "v1.9.2",
            "v1.9.1",
            "v1.9.0",
            "v1.8.0",
            "v1.7.1",
            "v1.7.0",
            "v1.6.0",
            "v1.5.1",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.8.0",
            "v0.7.0",
            "v0.6.0",
            "v0.5.0",
            "v0.4.0",
            "v0.3.0",
            "v0.2.0",
            "v0.1.0",
            "v0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55765.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.083780466Z",
      "provider": "osv",
      "references": [
        "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.28.4",
        "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.29.2",
        "https://github.com/cloudnative-pg/cloudnative-pg/releases/tag/v1.30.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55765.json",
        "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-w3gf-xc94-wvmj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-55765",
        "https://github.com/cloudnative-pg/cloudnative-pg/commit/2f0342747e1f160425b9d51753c0069b0d6117d5",
        "https://github.com/cloudnative-pg/cloudnative-pg/commit/3cd5af5d388c26758acf13c19ea806b4bcebb3fe",
        "https://github.com/cloudnative-pg/cloudnative-pg/commit/9a13573dbe3d78721b7ea92141e6d2324a2c0ef0",
        "https://github.com/cloudnative-pg/cloudnative-pg/pull/10724"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-256",
          "CWE-522"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55765.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55765",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504281,
  "published_at": "2026-08-20T21:38:47.952+00:00"
}