{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-41872", "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce", "state": "PUBLISHED", "assignerShortName": "jpcert", "dateReserved": "2026-04-22T07:25:34.140Z", "datePublished": "2026-05-12T05:21:42.802Z", "dateUpdated": "2026-05-12T05:21:42.802Z"}, "containers": {"cna": {"affected": [{"vendor": "EPG, Inc.", "product": "\"Kura Sushi Official App\" for Android", "versions": [{"version": "from 2.0.11 to 3.9.10", "status": "affected"}]}, {"vendor": "EPG, Inc.", "product": "\"Kura Sushi Official App\" for iOS", "versions": [{"version": "from 2.0.11 to 3.9.10", "status": "affected"}]}], "descriptions": [{"lang": "en", "value": "\"Kura Sushi Official App\" provided by EPG, Inc. is vulnerable to improper certificate validation. A man-in-the-middle attack may allow eavesdropping on, or altering, the communication on push notifications between the affected application and the relevant server."}], "problemTypes": [{"descriptions": [{"description": "Improper certificate validation", "lang": "en-US", "cweId": "CWE-295", "type": "CWE"}]}], "references": [{"url": "https://play.google.com/store/apps/details?id=jp.co.kura_corpo&hl=ja"}, {"url": "https://apps.apple.com/jp/app/id942355925"}, {"url": "https://jvn.jp/en/jp/JVN38632731/"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV3_0": {"version": "3.0", "baseSeverity": "HIGH", "baseScore": 7.4, "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"}}, {"format": "CVSS", "scenarios": [{"lang": "en-US", "value": "GENERAL"}], "cvssV4_0": {"version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.1, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "providerMetadata": {"orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce", "shortName": "jpcert", "dateUpdated": "2026-05-12T05:21:42.802Z"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "\"Kura Sushi Official App\" provided by EPG, Inc. is vulnerable to improper certificate validation. A man-in-the-middle attack may allow eavesdropping on, or altering, the communication on push notifications between the affected application and the relevant server."}], "id": "CVE-2026-41872", "lastModified": "2026-05-12T06:16:09.400", "metrics": {"cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "vultures@jpcert.or.jp", "type": "Secondary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "vultures@jpcert.or.jp", "type": "Secondary"}]}, "published": "2026-05-12T06:16:09.400", "references": [{"source": "vultures@jpcert.or.jp", "url": "https://apps.apple.com/jp/app/id942355925"}, {"source": "vultures@jpcert.or.jp", "url": "https://jvn.jp/en/jp/JVN38632731/"}, {"source": "vultures@jpcert.or.jp", "url": "https://play.google.com/store/apps/details?id=jp.co.kura_corpo&hl=ja"}], "sourceIdentifier": "vultures@jpcert.or.jp", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "vultures@jpcert.or.jp", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.0.11,3.9.10]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "\"Kura Sushi Official App\" for Android", "source": "cna", "vendor": "EPG, Inc."}, "product": "kura_sushi_official_app", "vendor": "epg"}], "created": "2026-05-12T06:30:09.501129+00:00", "title": "Certificate Validation Failure Enabling MITM on Push Notifications in Kura Sushi Application", "updated": "2026-05-12T09:21:55.598163+00:00", "vendors": ["epg", "epg$PRODUCT$kura_sushi_official_app"]}