{"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": "2026-05-08T12:51:03.873Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "shortName": "bcorg", "dateUpdated": "2026-05-08T06:01:40.875Z"}, "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-FJA", "platforms": ["Linux", "X86_64", "AVX", "AVX-512f"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "packageName": "BC-FIPS", "repo": "https://repo1.maven.org/maven2/org/bouncycastle/bc-fips/", "programFiles": ["gcm128w", "gcm512w"], "versions": [{"status": "affected", "version": "2.1.0", "lessThanOrEqual": "2.1.2", "versionType": "maven"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-FJA BC-FIPS 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-FJA: from 2.1.0 through 2.1.2.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A vulnerability in Legion of the Bouncy Castle Inc. BC-FJA BC-FIPS on Linux, X86_64, AVX, AVX-512f.<p> This vulnerability is associated with program files gcm128w, gcm512w.</p><p>This issue affects BC-FJA: from 2.1.0 through 2.1.2.</p>"}]}], "references": [{"url": "https://do-not-publish.bouncycastle.org/do_not_publish", "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"}}]}}