{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-107349", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-10-07T19:13:32.963Z", "datePublished": "2026-10-14T17:34:33.785Z", "dateUpdated": "2026-10-14T17:34:33.785Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-10-14T17:34:33.785Z"}, "title": "Infinite loop on empty option name in startup options parameter in PgBouncer", "descriptions": [{"lang": "en", "value": "An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as \"-c=\", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted."}], "affected": [{"defaultStatus": "unaffected", "product": "PgBouncer", "vendor": "n/a", "versions": [{"version": "1.20.0", "lessThan": "1.26.1", "versionType": "semver", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-835", "type": "CWE", "description": "Loop with Unreachable Exit Condition ('Infinite Loop')"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-400", "type": "CWE", "description": "Uncontrolled Resource Consumption"}]}], "references": [{"url": "https://www.pgbouncer.org/changelog.html"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH"}}], "configurations": [{"lang": "en", "value": "ignore_startup_parameters is set to a non-empty value that does not contain options."}], "workarounds": [{"lang": "en", "value": "Either add options to ignore_startup_parameters, or set ignore_startup_parameters to an empty value."}], "credits": [{"lang": "en", "value": "Thanks to Jackds Security (@jackds-security) for finding and reporting this issue.", "type": "finder"}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "PgBouncer", "vendor": "n/a", "versions": [{"lessThan": "1.26.1", "status": "affected", "version": "1.20.0", "versionType": "semver"}]}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An infinite loop in PgBouncer 1.20.0 through 1.26.0 allows an unauthenticated remote attacker to cause a denial of service. A StartupMessage whose options parameter contains an empty parameter name, such as \"-c=\", makes the ignore_startup_parameters list lookup loop forever. Because PgBouncer serves all clients from a single process, this saturates a CPU core and makes PgBouncer unresponsive to all clients until the process is restarted."}], "id": "CVE-2026-107349", "lastModified": "2026-10-14T18:17:25.557", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}, "published": "2026-10-14T18:17:25.557", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.pgbouncer.org/changelog.html"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-835"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{}

{"created": "2026-10-14T21:15:07.388700+00:00", "updated": "2026-10-14T21:15:07.388706+00:00", "vendors": []}