{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89320", "assignerOrgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c", "state": "PUBLISHED", "assignerShortName": "eclipse", "dateReserved": "2026-09-11T13:55:59.296Z", "datePublished": "2026-10-23T08:56:20.140Z", "dateUpdated": "2026-10-23T08:56:20.140Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "e51fbebd-6053-4e49-959f-1b94eeb69a2c", "shortName": "eclipse", "dateUpdated": "2026-10-23T08:56:20.140Z"}, "title": "HmacShaCryptor.Hash never hashes its input \u2014 returns constant HMAC_K(\"\") for all inputs, voiding CBC-HMAC JWE integrity", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-354", "description": "CWE-354 Improper Validation of Integrity Check Value", "type": "CWE"}]}], "affected": [{"vendor": "Eclipse Foundation", "product": "Eclipse KeyPont - GOSE", "packageName": "github.com/ThalesGroup/gose", "versions": [{"status": "affected", "version": "0.9.0", "lessThanOrEqual": "0.13.0-rc1", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"vendor": "Eclipse Foundation", "product": "Eclipse KeyPont - GOSE", "packageName": "github.com/eclipse-keypont/gose", "versions": [{"status": "affected", "version": "0", "lessThan": "1.0.0-rc1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "`HmacShaCryptor.Hash` never hashed its input. For any input it returned `HMAC_K(\"\")` \u2014 the MAC of the empty message under the key. Every AES-CBC-HMAC JWE produced or verified by gose therefore carried an authentication tag that is constant per key and independent of the message, removing ciphertext integrity entirely.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>`HmacShaCryptor.Hash` never hashed its input. For any input it returned `HMAC_K(\"\")` \u2014 the MAC of the empty message under the key. Every AES-CBC-HMAC JWE produced or verified by gose therefore carried an authentication tag that is constant per key and independent of the message, removing ciphertext integrity entirely.</p>"}]}], "references": [{"url": "https://github.com/eclipse-keypont/gose/security/advisories/GHSA-h6w5-722x-2h3m"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.8, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Eclipse Foundation Security Team", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageName": "github.com/ThalesGroup/gose", "product": "Eclipse KeyPont - GOSE", "vendor": "Eclipse Foundation", "versions": [{"lessThanOrEqual": "0.13.0-rc1", "status": "affected", "version": "0.9.0", "versionType": "semver"}]}, {"defaultStatus": "unaffected", "packageName": "github.com/eclipse-keypont/gose", "product": "Eclipse KeyPont - GOSE", "vendor": "Eclipse Foundation", "versions": [{"lessThan": "1.0.0-rc1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "[email protected]"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "`HmacShaCryptor.Hash` never hashed its input. For any input it returned `HMAC_K(\"\")` \u2014 the MAC of the empty message under the key. Every AES-CBC-HMAC JWE produced or verified by gose therefore carried an authentication tag that is constant per key and independent of the message, removing ciphertext integrity entirely."}], "id": "CVE-2026-89320", "lastModified": "2026-10-23T09:17:08.610", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.8, "baseSeverity": "HIGH", "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:N/PR:N/UI:N/VC:L/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": "LOW", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "[email protected]", "type": "Secondary"}]}, "published": "2026-10-23T09:17:08.610", "references": [{"source": "[email protected]", "url": "https://github.com/eclipse-keypont/gose/security/advisories/GHSA-h6w5-722x-2h3m"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-354"}], "source": "[email protected]", "type": "Primary"}]}

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{"created": "2026-10-23T10:30:09.099090+00:00", "updated": "2026-10-23T10:30:09.099098+00:00", "vendors": []}