CVE-2026-6467

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6467", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-04-17T00:20:56.212Z", "datePublished": "2026-11-12T14:15:32.994Z", "dateUpdated": "2026-11-13T05:02:33.028Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-11-12T14:15:32.994Z"}, "title": "PostgreSQL extension script schema mishandling executes arbitrary SQL", "x_postgresql": {"component": "core server"}, "descriptions": [{"lang": "en", "value": "Uncontrolled search path element in PostgreSQL CREATE EXTENSION allows an attacker with database-level CREATE privilege to execute arbitrary code as the bootstrap superuser, via ALTER SCHEMA ... RENAME or CREATE EXTENSION ... SCHEMA \"$user\". ALTER EXTENSION was also affected. A trusted-extension script located the wrong object and executed arbitrary SQL of the attacker's choice. 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-427", "type": "CWE", "description": "Uncontrolled Search Path Element"}]}], "references": [{"url": "https://www.postgresql.org/support/security/CVE-2026-6467/"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH"}}], "configurations": [{"lang": "en", "value": "attacker has database-level CREATE privilege"}], "credits": [{"lang": "en", "value": "The PostgreSQL project thanks Noah Misch 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-2026-6467"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-13T05:02:33.028Z"}}]}}

{}

{"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": "Uncontrolled search path element in PostgreSQL CREATE EXTENSION allows an attacker with database-level CREATE privilege to execute arbitrary code as the bootstrap superuser, via ALTER SCHEMA ... RENAME or CREATE EXTENSION ... SCHEMA \"$user\". ALTER EXTENSION was also affected. A trusted-extension script located the wrong object and executed arbitrary SQL of the attacker's choice. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "id": "CVE-2026-6467", "lastModified": "2026-11-13T05:18:53.663", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.2, "impactScore": 5.9, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6467", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-11-12T15:17:51.793", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.postgresql.org/support/security/CVE-2026-6467/"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-427"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{"bugzilla": {"description": "postgresql: postgresql: Privilege escalation via uncontrolled search path in extension management", "id": "2572538", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2572538"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-427", "details": ["A flaw was found in PostgreSQL. An uncontrolled search path issue in extension management allows an authenticated user with database-level CREATE privileges to execute arbitrary code as the database superuser. By altering schemas or specifying crafted schema names during extension installation or modification, an attacker can cause trusted extension scripts to execute arbitrary SQL commands with elevated privileges."], "mitigation": {"lang": "en:us", "value": "Revoke database-level CREATE privileges from untrusted roles and restrict network access to the PostgreSQL service.\nTo prevent non-superusers from creating schemas or installing extensions, revoke the database creation privilege in PostgreSQL:\nREVOKE CREATE ON DATABASE <database_name> FROM PUBLIC;\nREVOKE CREATE ON DATABASE <database_name> FROM <role_name>;\nAdditionally, limit network exposure by restricting connections in pg_hba.conf to trusted hosts, or enforce firewall rules via firewalld:\nfirewall-cmd --permanent --zone=public --remove-service=postgresql\nfirewall-cmd --reload\nIf modifying pg_hba.conf, apply configuration changes using:\nsystemctl reload postgresql\nWarning: Reloading the service or applying firewall rules will alter network connectivity and may disconnect clients that are not explicitly permitted. Revoking the CREATE privilege prevents affected accounts from defining new schemas or managing extensions until granted by a superuser."}, "name": "CVE-2026-6467", "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": "2026-11-12T14:15:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-6467\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-6467\nhttps://www.postgresql.org/support/security/CVE-2026-6467/"], "statement": "This vulnerability is rated as an Important impact because an authenticated user possessing database creation rights can escalate privileges to the database bootstrap superuser, resulting in complete administrative control over the PostgreSQL instance. While the flaw demands pre-existing database credentials with database-level CREATE permissions, the resulting blast radius encompasses full compromise of database confidentiality, integrity, and availability. In standard Red Hat Enterprise Linux deployments, unprivileged users do not receive database-level CREATE permissions by default, limiting exposure to systems configured for non-superuser extension administration or delegated multi-tenant operations.", "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": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "PostgreSQL", "source": "cna", "vendor": "n/a"}, "product": "postgresql", "vendor": "postgresql"}], "created": "2026-11-13T06:30:08.084936+00:00", "updated": "2026-11-13T06:30:08.084992+00:00", "vendors": ["postgresql", "postgresql$PRODUCT$postgresql"]}