{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-116307", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-10-26T03:52:44.051Z", "datePublished": "2026-11-12T14:15:03.906Z", "dateUpdated": "2026-11-12T21:49:29.597Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-11-12T14:15:03.906Z"}, "title": "PostgreSQL plperl prepared-query 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 re-entering plperl and freeing a prepared query while an outer invocation is executing it. 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-2026-116307/"}], "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 Zheng Yu for reporting this problem."}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-12T21:25:48.798686Z", "id": "CVE-2026-116307", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-12T21:49:29.597Z"}}]}}

{}

{"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 re-entering plperl and freeing a prepared query while an outer invocation is executing it. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected."}], "id": "CVE-2026-116307", "lastModified": "2026-11-12T22:18:25.700", "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-2026-116307", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T21:25:48.798686Z", "version": "2.0.3"}}]}, "published": "2026-11-12T15:17:38.340", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.postgresql.org/support/security/CVE-2026-116307/"}], "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 plperl", "id": "2572560", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2572560"}, "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. A use-after-free memory flaw in the PL/Perl (plperl) procedural language extension allows an authenticated database user with object creation privileges to execute arbitrary code as the operating system user running the database service. This issue occurs when re-entering the plperl environment and freeing a prepared database query while an outer invocation is actively executing it."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, disable the PL/Perl procedural language extension or remove its subpackage if PL/Perl functions are not required:\n1. Drop the PL/Perl extension from affected databases:\n```sql\nDROP EXTENSION IF EXISTS plperl CASCADE;\nDROP EXTENSION IF EXISTS plperlu CASCADE;\n```\n2. Alternatively, revoke language usage privileges from untrusted roles:\n```sql\nREVOKE USAGE ON LANGUAGE plperl FROM PUBLIC;\n```\n3. If PL/Perl is entirely unused across the host, uninstall the optional subpackage:\n```sh\n# dnf remove postgresql-plperl\n```\nCaveats:\n- Dropping the extension or removing the subpackage will cause any database queries or stored procedures relying on PL/Perl to fail.\n- Using CASCADE will recursively drop all database objects (such as functions and triggers) that depend on PL/Perl.\n- Warning: Modifying system packages or stopping the database service for maintenance may require a service reload or restart (`systemctl restart postgresql`), which will disconnect active client sessions and cause temporary database unavailability."}, "name": "CVE-2026-116307", "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": "2026-11-12T14:15:03Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-116307\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-116307\nhttps://www.postgresql.org/support/security/CVE-2026-116307/"], "statement": "Red Hat Product Security rates this vulnerability as Important because authenticated accounts permitted to define custom database objects can execute shell commands under the PostgreSQL service account. The impact does not reach Critical severity because exploitation requires existing database access along with specific object creation permissions, and the PL/Perl language extension is not enabled in standard deployments by default. Environments remain unaffected unless administrators explicitly install and activate PL/Perl and grant object-definition rights to untrusted users.", "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": "2026-11-13T00:45:11.867492+00:00", "updated": "2026-11-13T00:45:11.867565+00:00", "vendors": ["postgresql", "postgresql$PRODUCT$postgresql"]}