{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-123318", "assignerOrgId": "547ada31-17d8-4964-bc5f-1b8238ba8014", "state": "PUBLISHED", "assignerShortName": "JetBrains", "dateReserved": "2026-11-05T18:38:26.699Z", "datePublished": "2026-11-06T10:28:04.880Z", "dateUpdated": "2026-11-06T10:28:04.880Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "547ada31-17d8-4964-bc5f-1b8238ba8014", "shortName": "JetBrains", "dateUpdated": "2026-11-06T10:28:04.880Z"}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-444", "cweId": "CWE-444"}]}], "affected": [{"vendor": "JetBrains", "product": "Ktor", "versions": [{"version": "0", "status": "affected", "lessThan": "3.6.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In JetBrains Ktor before 3.6.1 hTTP request smuggling was possible in the CIO engine"}], "references": [{"url": "https://www.jetbrains.com/privacy-security/issues-fixed/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}}]}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Ktor", "vendor": "JetBrains", "versions": [{"lessThan": "3.6.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "cve@jetbrains.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In JetBrains Ktor before 3.6.1 hTTP request smuggling was possible in the CIO engine"}], "id": "CVE-2026-123318", "lastModified": "2026-11-06T21:29:48.800", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 2.5, "source": "cve@jetbrains.com", "type": "Secondary"}]}, "published": "2026-11-06T11:17:11.317", "references": [{"source": "cve@jetbrains.com", "url": "https://www.jetbrains.com/privacy-security/issues-fixed/"}], "sourceIdentifier": "cve@jetbrains.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-444"}], "source": "cve@jetbrains.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.6.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Ktor", "source": "cna", "vendor": "JetBrains"}, "product": "ktor", "vendor": "jetbrains"}], "created": "2026-11-06T11:45:03.226464+00:00", "title": "Ktor CIO Engine HTTP Request Smuggling Vulnerability", "updated": "2026-11-06T12:15:02.474473+00:00", "vendors": ["jetbrains", "jetbrains$PRODUCT$ktor"]}