{"api_version":"1","generated_at":"2026-06-11T18:46:07+00:00","cve":"CVE-2026-6338","urls":{"html":"https://cve.report/CVE-2026-6338","api":"https://cve.report/api/cve/CVE-2026-6338.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-6338","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-6338"},"summary":{"title":"HTTP request smuggling in Kong Enteprise Gateway","description":"A HTTP request smuggling and desynchronization vulnerability affects Kong Gateway Enterprise 3.4, 3.10, 3.11, 3.12, 3.13, and 3.14 series. The vulnerability is caused by a parsing flaw in Kong’s HTTP request processing pipeline when handling untrusted HTTP/1.1 traffic.","state":"PUBLISHED","assigner":"Kong","published_at":"2026-06-11 14:16:32","updated_at":"2026-06-11 15:32:52"},"problem_types":["CWE-444","CWE-444 CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')"],"metrics":[{"version":"4.0","source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","type":"Secondary","score":"4.9","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:X","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"4.9","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/R:A/RE:M","data":{"Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":4.9,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/R:A/RE:M","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"}}],"references":[{"url":"https://support.konghq.com/support/s/article/CVE-2026-6338","name":"https://support.konghq.com/support/s/article/CVE-2026-6338","refsource":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-6338","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-6338","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.4.0.0 3.4.3.27 kong enteprise gateway 3.4","platforms":["Linux"]},{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.10.0.0 3.10.0.12 kong enteprise gateway 3.10","platforms":["Linux"]},{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.11.0.0 3.11.0.12 kong enteprise gateway 3.11","platforms":["Linux"]},{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.12.0.0 3.12.0.7 kong enteprise gateway 3.12","platforms":["Linux"]},{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.13.0.0 3.13.0.5 kong enteprise gateway 3.13","platforms":["Linux"]},{"source":"CNA","vendor":"Kong","product":"Kong Enterprise Gateway","version":"affected 3.14.0.0 3.14.0.4 kong enteprise gateway 3.14","platforms":["Linux"]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-6338","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-06-11T14:22:42.512428Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-06-11T14:23:21.941Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["Linux"],"product":"Kong Enterprise Gateway","vendor":"Kong","versions":[{"lessThan":"3.4.3.27","status":"affected","version":"3.4.0.0","versionType":"kong enteprise gateway 3.4"},{"lessThan":"3.10.0.12","status":"affected","version":"3.10.0.0","versionType":"kong enteprise gateway 3.10"},{"lessThan":"3.11.0.12","status":"affected","version":"3.11.0.0","versionType":"kong enteprise gateway 3.11"},{"lessThan":"3.12.0.7","status":"affected","version":"3.12.0.0","versionType":"kong enteprise gateway 3.12"},{"lessThan":"3.13.0.5","status":"affected","version":"3.13.0.0","versionType":"kong enteprise gateway 3.13"},{"lessThan":"3.14.0.4","status":"affected","version":"3.14.0.0","versionType":"kong enteprise gateway 3.14"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"A HTTP request smuggling and desynchronization vulnerability affects Kong Gateway Enterprise 3.4, 3.10, 3.11, 3.12, 3.13, and 3.14 series. The vulnerability is caused by a parsing flaw in Kong’s HTTP request processing pipeline when handling untrusted HTTP/1.1 traffic. "}],"value":"A HTTP request smuggling and desynchronization vulnerability affects Kong Gateway Enterprise 3.4, 3.10, 3.11, 3.12, 3.13, and 3.14 series. The vulnerability is caused by a parsing flaw in Kong’s HTTP request processing pipeline when handling untrusted HTTP/1.1 traffic."}],"impacts":[{"capecId":"CAPEC-33","descriptions":[{"lang":"en","value":"CAPEC-33 HTTP Request Smuggling"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":4.9,"baseSeverity":"MEDIUM","exploitMaturity":"PROOF_OF_CONCEPT","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/R:A/RE:M","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"MODERATE"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-444","description":"CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-06-11T13:47:01.309Z","orgId":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","shortName":"Kong"},"references":[{"tags":["vendor-advisory"],"url":"https://support.konghq.com/support/s/article/CVE-2026-6338"}],"source":{"discovery":"UNKNOWN"},"title":"HTTP request smuggling in Kong Enteprise Gateway","x_generator":{"engine":"Vulnogram 1.0.2"}}},"cveMetadata":{"assignerOrgId":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","assignerShortName":"Kong","cveId":"CVE-2026-6338","datePublished":"2026-06-11T13:47:01.309Z","dateReserved":"2026-04-15T10:07:35.856Z","dateUpdated":"2026-06-11T14:23:21.941Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-11 14:16:32","lastModifiedDate":"2026-06-11 15:32:52","problem_types":["CWE-444","CWE-444 CWE-444 Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')"],"metrics":{"cvssMetricV40":[{"source":"02762ae7-200e-4b20-9b2b-a77d5b8fc4cb","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:A/V:X/RE:M/U:X","baseScore":4.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","subAvailabilityImpact":"NONE","exploitMaturity":"PROOF_OF_CONCEPT","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"AUTOMATIC","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"MODERATE","providerUrgency":"NOT_DEFINED"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"6338","Ordinal":"1","Title":"HTTP request smuggling in Kong Enteprise Gateway","CVE":"CVE-2026-6338","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"6338","Ordinal":"1","NoteData":"A HTTP request smuggling and desynchronization vulnerability affects Kong Gateway Enterprise 3.4, 3.10, 3.11, 3.12, 3.13, and 3.14 series. The vulnerability is caused by a parsing flaw in Kong’s HTTP request processing pipeline when handling untrusted HTTP/1.1 traffic.","Type":"Description","Title":"HTTP request smuggling in Kong Enteprise Gateway"}]}}}