{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8149", "assignerOrgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "state": "PUBLISHED", "assignerShortName": "bcorg", "dateReserved": "2026-05-08T05:23:49.585Z", "datePublished": "2026-05-08T06:01:40.875Z", "dateUpdated": "2026-05-18T23:39:06.506Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "shortName": "bcorg", "dateUpdated": "2026-05-18T23:39:06.506Z"}, "title": "GCM chunking can lead to bad tag exception on decryption", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-1068", "description": "CWE-1068", "type": "CWE"}]}], "affected": [{"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-LTS", "platforms": ["Linux", "X86_64", "AVX", "AVX-512f"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "packageName": "BC-LTS", "repo": "https://repo1.maven.org/maven2/org/bouncycastle/bcprov-lts18on", "programFiles": ["gcm128w", "gcm512w"], "versions": [{"status": "affected", "version": "2.73.0", "lessThan": "2.73.11", "versionType": "maven"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS on Linux, X86_64, AVX, AVX-512f.\n\n This vulnerability is associated with program files gcm128w, gcm512w.\n\n\n\nThis issue affects BC-LTS: from 2.73.0 before 2.73.11.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS on Linux, X86_64, AVX, AVX-512f.<p> This vulnerability is associated with program files gcm128w, gcm512w.</p><p>This issue affects BC-LTS: from 2.73.0 before 2.73.11.</p>"}]}], "references": [{"url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%908149", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NEGLIGIBLE", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "MODERATE", "providerUrgency": "AMBER", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.1, "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/S:N/RE:M/U:Amber"}}], "workarounds": [{"lang": "en", "value": "If possible pass whole message to GCM via doFinal(..) for decryption. Issue only occurs when decryption is chunked at certain boundaries.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "If possible pass whole message to GCM via doFinal(..) for decryption. Issue only occurs when decryption is chunked at certain boundaries."}]}], "credits": [{"lang": "en", "value": "Michael Sch\u00e4fer, Kiteworks", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-08T12:50:54.859989Z", "id": "CVE-2026-8149", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T12:51:03.873Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8149", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-08T12:50:54.859989Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T12:50:59.531Z"}}], "cna": {"title": "GCM chunking can lead to bad tag exception on decryption", "source": {"discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Michael Sch\u00e4fer, Kiteworks"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NEGLIGIBLE", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.1, "Automatable": "NOT_DEFINED", "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/S:N/RE:M/U:Amber", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "AMBER", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://repo1.maven.org/maven2/org/bouncycastle/bcprov-lts18on", "vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-LTS", "versions": [{"status": "affected", "version": "2.73.0", "lessThan": "2.73.11", "versionType": "maven"}], "platforms": ["Linux", "X86_64", "AVX", "AVX-512f"], "packageName": "BC-LTS", "programFiles": ["gcm128w", "gcm512w"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%908149", "tags": ["vendor-advisory"]}], "workarounds": [{"lang": "en", "value": "If possible pass whole message to GCM via doFinal(..) for decryption. Issue only occurs when decryption is chunked at certain boundaries.", "supportingMedia": [{"type": "text/html", "value": "If possible pass whole message to GCM via doFinal(..) for decryption. Issue only occurs when decryption is chunked at certain boundaries.", "base64": false}]}], "x_generator": {"engine": "Vulnogram 1.0.2"}, "descriptions": [{"lang": "en", "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS on Linux, X86_64, AVX, AVX-512f.\n\n This vulnerability is associated with program files gcm128w, gcm512w.\n\n\n\nThis issue affects BC-LTS: from 2.73.0 before 2.73.11.", "supportingMedia": [{"type": "text/html", "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS on Linux, X86_64, AVX, AVX-512f.<p> This vulnerability is associated with program files gcm128w, gcm512w.</p><p>This issue affects BC-LTS: from 2.73.0 before 2.73.11.</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1068", "description": "CWE-1068"}]}], "providerMetadata": {"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "shortName": "bcorg", "dateUpdated": "2026-05-18T23:39:06.506Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8149", "state": "PUBLISHED", "dateUpdated": "2026-05-18T23:39:06.506Z", "dateReserved": "2026-05-08T05:23:49.585Z", "assignerOrgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "datePublished": "2026-05-08T06:01:40.875Z", "assignerShortName": "bcorg"}, "dataVersion": "5.2"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-LTS on Linux, X86_64, AVX, AVX-512f.\n\n This vulnerability is associated with program files gcm128w, gcm512w.\n\n\n\nThis issue affects BC-LTS: from 2.73.0 before 2.73.11."}], "id": "CVE-2026-8149", "lastModified": "2026-05-19T00:16:37.920", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NEGLIGIBLE", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.1, "baseSeverity": "MEDIUM", "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": "AMBER", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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:N/AU:X/R:X/V:X/RE:M/U:Amber", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "MODERATE"}, "source": "91579145-5d7b-4cc5-b925-a0262ff19630", "type": "Secondary"}]}, "published": "2026-05-08T07:16:29.603", "references": [{"source": "91579145-5d7b-4cc5-b925-a0262ff19630", "url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%908149"}], "sourceIdentifier": "91579145-5d7b-4cc5-b925-a0262ff19630", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1068"}], "source": "91579145-5d7b-4cc5-b925-a0262ff19630", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["linux", "x86_64", "avx", "avx-512f"], "status": "affected", "versions": {"scheme": "semver", "value": "[2.1.0,2.1.2]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "BC-FJA", "source": "cna", "vendor": "Legion of the Bouncy Castle Inc."}, "product": "bc-fja", "vendor": "bouncycastle"}], "created": "2026-05-08T08:30:04.387739+00:00", "updated": "2026-05-19T01:30:26.331162+00:00", "vendors": ["bouncycastle", "bouncycastle$PRODUCT$bc-fja"]}