CVE-2026-61817

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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, run_maintenance(), show_partitions(), show_partition_info(), undo_partition(), and partition_data_time() interpolate the writable part_config.time_dncoder text value without identifier quoting into dynamic SQL. A role with the documented partman_user privileges can store SQL rather than a decoder function name. When an affected operation later uses the poisoned value, including pg_partman_bgw maintenance for a text- or UUID-keyed set, the SQL executes with the operation's privileges, which can be the default PostgreSQL superuser background-worker role. The persistent row can restore elevated access on later ticks, and successful exploitation can permit database-wide compromise and operating-system command execution as the PostgreSQL service account. This issue is fixed in version 5.5.0."}], "id": "CVE-2026-61817", "lastModified": "2026-09-24T21:22:19.873", "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-2026-61817", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-19T13:37:45.837285Z", "version": "2.0.3"}}]}, "published": "2026-09-18T20:17:19.163", "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-gmw2-52wc-258g"}], "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": 80.0, "confidence_source": "matching", "scores": [{"score": 80.0, "source": "matching"}]}, "original": {"product": "pg_partman", "source": "cna", "vendor": "pgpartman"}, "product": "pg_partman", "vendor": "pgxn"}], "created": "2026-09-19T11:30:06.475498+00:00", "updated": "2026-09-19T22:00:21.634479+00:00", "vendors": ["pgxn", "pgxn$PRODUCT$pg_partman"]}