{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-6664", "assignerOrgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "state": "PUBLISHED", "assignerShortName": "PostgreSQL", "dateReserved": "2026-04-20T12:25:43.095Z", "datePublished": "2026-05-09T00:43:42.640Z", "dateUpdated": "2026-05-09T00:43:42.640Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "shortName": "PostgreSQL", "dateUpdated": "2026-05-09T00:43:42.640Z"}, "title": "PgBouncer integer overflow in PgBouncer network packet parsing", "descriptions": [{"lang": "en", "value": "An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet."}], "affected": [{"defaultStatus": "unaffected", "product": "PgBouncer", "vendor": "n/a", "versions": [{"lessThan": "1.25.2", "version": "0", "versionType": "semver", "status": "affected"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-190", "type": "CWE", "description": "Integer Overflow or Wraparound"}]}], "references": [{"url": "https://www.pgbouncer.org/changelog.html#pgbouncer-125x"}], "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": "SCRAM client authentication is configured"}], "workarounds": [{"lang": "en", "value": "Do not configure SCRAM for client authentication"}], "credits": [{"lang": "en", "value": "Thanks to Johannes M\u00f6ller for finding and reporting this problem.", "type": "finder"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "An integer overflow in network packet parsing code in PgBouncer before 1.25.2 bypasses a boundary check and can lead to a crash. An unauthenticated remote attacker can crash PgBouncer with a malformed SCRAM authentication packet."}], "id": "CVE-2026-6664", "lastModified": "2026-05-09T01:16:08.863", "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": "2026-05-09T01:16:08.863", "references": [{"source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "url": "https://www.pgbouncer.org/changelog.html#pgbouncer-125x"}], "sourceIdentifier": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}], "source": "f86ef6dc-4d3a-42ad-8f28-e6d5547a5007", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.25.2)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "PgBouncer", "source": "cna", "vendor": "n/a"}, "product": "pgbouncer", "vendor": "pgbouncer"}], "created": "2026-05-09T02:30:16.162225+00:00", "updated": "2026-05-09T03:30:24.688239+00:00", "vendors": ["pgbouncer", "pgbouncer$PRODUCT$pgbouncer"]}