CVE-2026-116320

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116320", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-10-26T03:52:44.052Z", "datePublished": "2026-11-12T14:15:11.698Z", "dateUpdated": "2026-11-13T05:02:56.846Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-11-12T14:15:11.698Z"}, "title": "PostgreSQL plperl array and hash conversion use-after-free executes arbitrary code", "x_postgresql": {"component": "core server"}, "descriptions": [{"lang": "en", "value": "Use after free in PostgreSQL plperl allows an object creator to execute arbitrary code as the operating system user running the database, via dropping the final reference to a Perl array or hash while PostgreSQL is converting that object. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "affected": [{"defaultStatus": "unaffected", "product": "PostgreSQL", "vendor": "n/a", "versions": [{"lessThan": "18.7", "status": "affected", "version": "18", "versionType": "rpm"}, {"lessThan": "17.12", "status": "affected", "version": "17", "versionType": "rpm"}, {"lessThan": "16.16", "status": "affected", "version": "16", "versionType": "rpm"}, {"lessThan": "15.20", "status": "affected", "version": "15", "versionType": "rpm"}, {"lessThan": "14.25", "status": "affected", "version": "0", "versionType": "rpm"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-416", "type": "CWE", "description": "Use After Free"}]}], "references": [{"url": "https://www.postgresql.org/support/security/CVE-2026-116320/"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH"}}], "configurations": [{"lang": "en", "value": "Attacker has permission to \"CREATE EXTENSION plperl\", or another user previously issued that. Attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema)."}], "credits": [{"lang": "en", "value": "The PostgreSQL project thanks Anthropic OSS program for reporting this problem."}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-12T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-116320"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-13T05:02:56.846Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PostgreSQL", "vendor": "n/a", "versions": [{"lessThan": "18.7", "status": "affected", "version": "18", "versionType": "rpm"}, {"lessThan": "17.12", "status": "affected", "version": "17", "versionType": "rpm"}, {"lessThan": "16.16", "status": "affected", "version": "16", "versionType": "rpm"}, {"lessThan": "15.20", "status": "affected", "version": "15", "versionType": "rpm"}, {"lessThan": "14.25", "status": "affected", "version": "0", "versionType": "rpm"}]}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in PostgreSQL plperl allows an object creator to execute arbitrary code as the operating system user running the database, via dropping the final reference to a Perl array or hash while PostgreSQL is converting that object. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "id": "CVE-2026-116320", "lastModified": "2026-11-13T05:18:07.007", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-116320", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-11-12T15:17:40.430", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.postgresql.org/support/security/CVE-2026-116320/"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{"bugzilla": {"description": "postgresql: postgresql: Arbitrary code execution via use-after-free in PL/Perl", "id": "2572569", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2572569"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A flaw was found in PostgreSQL. An authenticated database user can achieve arbitrary code execution with the privileges of the operating system user running the database due to a use-after-free vulnerability in the PL/Perl procedural language. This issue occurs when the final reference to a Perl array or hash is dropped while PostgreSQL is converting the object, resulting in memory corruption."], "mitigation": {"lang": "en:us", "value": "Remove the optional PL/Perl package if procedural Perl functions are not required, or restrict language usage permissions to trusted administrators only.\nTo remove the optional package:\n# dnf remove postgresql-plperl\nAlternatively, revoke usage of the PL/Perl languages from untrusted database users:\nREVOKE USAGE ON LANGUAGE plperl FROM PUBLIC;\nREVOKE USAGE ON LANGUAGE plperlu FROM PUBLIC;\nCaveats: Removing the package or revoking language permissions will cause stored procedures and application queries dependent on PL/Perl to fail.\nWarning: Existing active database sessions that have already loaded the plperl shared object must be terminated, or the PostgreSQL service restarted, for the removal to take effect across all sessions."}, "name": "CVE-2026-116320", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "libpq", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "postgresql17", "product_name": "Red Hat Hardened Images"}, {"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "postgresql18", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-11-12T14:15:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116320\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116320\nhttps://www.postgresql.org/support/security/CVE-2026-116320/"], "statement": "This vulnerability is rated as an Important severity rather than Critical because exploitation requires valid database authentication and the capability to create or execute PL/Perl procedures, though successful exploitation enables arbitrary code execution as the database server process owner. In default Red Hat Enterprise Linux installations, the PL/Perl procedural language is packaged separately and is not enabled by default. Consequently, environments are only exposed if this optional extension has been explicitly installed and untrusted users have permission to define or run PL/Perl routines.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[18,18.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[17,17.12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[16,16.16)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15,15.20)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,14.25)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "PostgreSQL", "source": "cna", "vendor": "n/a"}, "product": "postgresql", "vendor": "postgresql"}], "created": "2026-11-12T23:45:10.756725+00:00", "updated": "2026-11-13T06:00:08.958009+00:00", "vendors": ["postgresql", "postgresql$PRODUCT$postgresql"]}