{"api_version":"1","generated_at":"2026-11-12T12:53:27+00:00","cve":"CVE-2026-117477","urls":{"html":"https://cve.report/CVE-2026-117477","api":"https://cve.report/api/cve/CVE-2026-117477.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-117477","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-117477"},"summary":{"title":"CVE-2026-117477","description":"KUSANAGI provided by GMO Prime Strategy Co., Ltd. contains an HTTP header injection vulnerability that may allow arbitrary HTTP headers to be injected into the HTTP response when a user accesses a specially crafted URL.","state":"PUBLISHED","assigner":"jpcert","published_at":"2026-11-10 00:17:05","updated_at":"2026-11-12 06:17:11"},"problem_types":["CWE-113","CWE-113 Improper neutralization of CRLF sequences in HTTP headers ('HTTP Request/Response Splitting')"],"metrics":[{"version":"4.0","source":"vultures@jpcert.or.jp","type":"Secondary","score":"5.1","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/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:X/V:X/RE:X/U:X","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/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:X/V:X/RE:X/U:X","baseScore":5.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","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":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"5.1","severity":"MEDIUM","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","data":{"baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0"}},{"version":"3.1","source":"vultures@jpcert.or.jp","type":"Secondary","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"6.1","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","data":{"baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://kusanagi.tokyo/en/releases/27995/","name":"https://kusanagi.tokyo/en/releases/27995/","refsource":"vultures@jpcert.or.jp","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://jvn.jp/en/vu/JVNVU92635551/","name":"https://jvn.jp/en/vu/JVNVU92635551/","refsource":"vultures@jpcert.or.jp","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-117477","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-117477","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 7","version":"affected * semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 9 Security Edition","version":"affected 10.7.2-1 semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 9 Enterprise Edition","version":"affected 10.7.2-1 semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 8 Free Edition","version":"affected * semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 8 Business Edition","version":"affected * semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 8 Premium Edition","version":"affected * semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 9 Free Edition","version":"affected 9.12.2-1 semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 9 Business Edition","version":"affected 9.12.2-1 semver","platforms":[]},{"source":"CNA","vendor":"GMO Prime Strategy Co., Ltd.","product":"KUSANAGI 9 Premium Edition","version":"affected 9.12.2-1 semver","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"KUSANAGI 7","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"*","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 9 Security Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"10.7.2-1","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 9 Enterprise Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"10.7.2-1","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 8 Free Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"*","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 8 Business Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"*","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 8 Premium Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"*","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 9 Free Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"9.12.2-1","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 9 Business Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"9.12.2-1","status":"affected","version":"0","versionType":"semver"}]},{"defaultStatus":"unaffected","product":"KUSANAGI 9 Premium Edition","vendor":"GMO Prime Strategy Co., Ltd.","versions":[{"lessThanOrEqual":"9.12.2-1","status":"affected","version":"0","versionType":"semver"}]}],"descriptions":[{"lang":"en","value":"KUSANAGI provided by GMO Prime Strategy Co., Ltd. contains an HTTP header injection vulnerability that may allow arbitrary HTTP headers to be injected into the HTTP response when a user accesses a specially crafted URL."}],"metrics":[{"cvssV3_1":{"baseScore":6.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]},{"cvssV4_0":{"baseScore":5.1,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N","version":"4.0"},"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-113","description":"Improper neutralization of CRLF sequences in HTTP headers ('HTTP Request/Response Splitting')","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-11-12T05:44:32.062Z","orgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","shortName":"jpcert"},"references":[{"url":"https://kusanagi.tokyo/en/releases/27995/"},{"url":"https://jvn.jp/en/vu/JVNVU92635551/"}]}},"cveMetadata":{"assignerOrgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","assignerShortName":"jpcert","cveId":"CVE-2026-117477","datePublished":"2026-11-09T23:22:12.476Z","dateReserved":"2026-10-27T06:16:54.712Z","dateUpdated":"2026-11-12T05:44:32.062Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-10 00:17:05","lastModifiedDate":"2026-11-12 06:17:11","problem_types":["CWE-113","CWE-113 Improper neutralization of CRLF sequences in HTTP headers ('HTTP Request/Response Splitting')"],"metrics":{"cvssMetricV40":[{"source":"vultures@jpcert.or.jp","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:X/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:X/V:X/RE:X/U:X","baseScore":5.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","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":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"vultures@jpcert.or.jp","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"117477","Ordinal":"1","Title":"CVE-2026-117477","CVE":"CVE-2026-117477","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"117477","Ordinal":"1","NoteData":"KUSANAGI provided by GMO Prime Strategy Co., Ltd. contains an HTTP header injection vulnerability that may allow arbitrary HTTP headers to be injected into the HTTP response when a user accesses a specially crafted URL.","Type":"Description","Title":"CVE-2026-117477"}]}}}