CVE-2026-61820

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{"affected": [{"affectedData": [{"product": "pg_partman", "vendor": "pgpartman", "versions": [{"status": "affected", "version": "< 5.5.0"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, inherit_template_properties() manually surrounds primary-key column names from pg_attribute.attname with double quotes without escaping embedded double-quote characters. A partman_user who owns a template table can create a crafted column name that breaks out of the generated ALTER TABLE ADD PRIMARY KEY identifier when the background worker applies the key to a child partition. The generated SQL then executes with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, permitting database-wide compromise and operating-system command execution as the PostgreSQL service account. The crafted catalog identifier persists until removed and can trigger again during later partition creation. This issue is fixed in version 5.5.0."}], "id": "CVE-2026-61820", "lastModified": "2026-09-23T18:28:25.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-61820", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-22T15:39:28.982624Z", "version": "2.0.3"}}]}, "published": "2026-09-18T20:17:20.067", "references": [{"source": "security-advisories@github.com", "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-xqxh-6hh3-974m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-89"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.5.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "product": "pg_partman", "vendor": "pgpartman"}], "created": "2026-09-19T11:30:06.475353+00:00", "updated": "2026-09-21T19:24:41.930265+00:00", "vendors": ["pgpartman", "pgpartman$PRODUCT$pg_partman"]}