CVE-2026-61821

Estado: Pendiente de análisisAlta (8.5)—

pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Puntuación base: 8.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.38%
Percentil entre todas las CVEs puntuadas: 30
Fecha de la puntuación: 6/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1078.001 Default Accountsstealth · persistence · privilege escalation · initial access70 %
Impacto secundarioT1565.002 Transmitted Data Manipulationimpact60 %

Explotación de servicio remoto PostgreSQL con privilegios limitados (PR:L) para eludir controles de autorización. Permite escalada de privilegios mediante relocalización no autorizada de tablas, aprovechando permisos superusuario del background worker.

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

Vulnerability Scanning Threat Intelligence Program Privileged Account Management Password Policies Network Segmentation Multi-factor Authentication

Tecnologías afectadas (1)

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

Postgresql — PG Partman^AI

CWE

CWE-862

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2026-61821",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-61821",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-19T13:37:30.159508Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "pgpartman",
          "product": "pg_partman",
          "versions": [
            {
              "status": "affected",
              "version": "< 5.5.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-18T20:17:20.220",
  "references": [
    {
      "url": "https://github.com/pgpartman/pg_partman/commit/ba9405542acf24dd881845b935cab8b165854361",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/pgpartman/pg_partman/releases/tag/v5.5.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/pgpartman/pg_partman/security/advisories/GHSA-pxp2-x8cf-rfhc",
      "source": "security-advisories@github.com"
    }
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  "vulnStatus": "Awaiting Analysis",
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      "description": [
        {
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          "value": "CWE-862"
        }
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0."
    }
  ],
  "lastModified": "2026-09-24T21:22:19.873",
  "sourceIdentifier": "security-advisories@github.com"
}