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2 vulnerabilities found for cloudnative-pg by cloudnative-pg

CVE-2026-44477 (GCVE-0-2026-44477)

Vulnerability from nvd – Published: 2026-05-28 15:46 – Updated: 2026-05-28 15:46
VLAI
Title
CloudNativePG: Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE
Summary
CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local Unix socket, then demotes the session with SET ROLE pg_monitor. SET ROLE changes only current_user; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to recover real superuser privileges, then use COPY ... TO PROGRAM to spawn an OS-level subprocess as the postgres user inside the primary pod. The READ ONLY transaction flag does not block this; it gates writes to database state, not external processes. This vulnerability is fixed in 1.29.1 and 1.28.3.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-250 - Execution with Unnecessary Privileges
  • CWE-271 - Privilege Dropping / Lowering Errors
  • CWE-426 - Untrusted Search Path
Assigner
References
Impacted products
Vendor Product Version
cloudnative-pg cloudnative-pg Affected: < 1.28.3
Affected: >= 1.29.0, < 1.29.1
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Show details on NVD website
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "cloudnative-pg",
          "vendor": "cloudnative-pg",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.28.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.29.0, \u003c 1.29.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local Unix socket, then demotes the session with SET ROLE pg_monitor. SET ROLE changes only current_user; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to recover real superuser privileges, then use COPY ... TO PROGRAM to spawn an OS-level subprocess as the postgres user inside the primary pod. The READ ONLY transaction flag does not block this; it gates writes to database state, not external processes. This vulnerability is fixed in 1.29.1 and 1.28.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-250",
              "description": "CWE-250: Execution with Unnecessary Privileges",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-271",
              "description": "CWE-271: Privilege Dropping / Lowering Errors",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-426",
              "description": "CWE-426: Untrusted Search Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-28T15:46:12.241Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-423p-g724-fr39",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-423p-g724-fr39"
        },
        {
          "name": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10576",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10576"
        }
      ],
      "source": {
        "advisory": "GHSA-423p-g724-fr39",
        "discovery": "UNKNOWN"
      },
      "title": "CloudNativePG: Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44477",
    "datePublished": "2026-05-28T15:46:12.241Z",
    "dateReserved": "2026-05-06T17:18:51.782Z",
    "dateUpdated": "2026-05-28T15:46:12.241Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-44477 (GCVE-0-2026-44477)

Vulnerability from cvelistv5 – Published: 2026-05-28 15:46 – Updated: 2026-05-28 15:46
VLAI
Title
CloudNativePG: Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE
Summary
CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local Unix socket, then demotes the session with SET ROLE pg_monitor. SET ROLE changes only current_user; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to recover real superuser privileges, then use COPY ... TO PROGRAM to spawn an OS-level subprocess as the postgres user inside the primary pod. The READ ONLY transaction flag does not block this; it gates writes to database state, not external processes. This vulnerability is fixed in 1.29.1 and 1.28.3.
Severity
9.4 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE
  • CWE-250 - Execution with Unnecessary Privileges
  • CWE-271 - Privilege Dropping / Lowering Errors
  • CWE-426 - Untrusted Search Path
Assigner
References
Impacted products
Vendor Product Version
cloudnative-pg cloudnative-pg Affected: < 1.28.3
Affected: >= 1.29.0, < 1.29.1
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "cloudnative-pg",
          "vendor": "cloudnative-pg",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.28.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.29.0, \u003c 1.29.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "CloudNativePG is a platform designed to manage PostgreSQL databases within Kubernetes environments. Prior to 1.29.1 and 1.28.3, the CloudNativePG metrics exporter opens its PostgreSQL connection as the postgres superuser via the pod-local Unix socket, then demotes the session with SET ROLE pg_monitor. SET ROLE changes only current_user; session_user remains postgres. Any SQL expression evaluated inside the scrape session can invoke RESET ROLE to recover real superuser privileges, then use COPY ... TO PROGRAM to spawn an OS-level subprocess as the postgres user inside the primary pod. The READ ONLY transaction flag does not block this; it gates writes to database state, not external processes. This vulnerability is fixed in 1.29.1 and 1.28.3."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-250",
              "description": "CWE-250: Execution with Unnecessary Privileges",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-271",
              "description": "CWE-271: Privilege Dropping / Lowering Errors",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-426",
              "description": "CWE-426: Untrusted Search Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-28T15:46:12.241Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-423p-g724-fr39",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cloudnative-pg/cloudnative-pg/security/advisories/GHSA-423p-g724-fr39"
        },
        {
          "name": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10576",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cloudnative-pg/cloudnative-pg/pull/10576"
        }
      ],
      "source": {
        "advisory": "GHSA-423p-g724-fr39",
        "discovery": "UNKNOWN"
      },
      "title": "CloudNativePG: Metrics exporter allows privilege escalation to PostgreSQL superuser and OS RCE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44477",
    "datePublished": "2026-05-28T15:46:12.241Z",
    "dateReserved": "2026-05-06T17:18:51.782Z",
    "dateUpdated": "2026-05-28T15:46:12.241Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}