{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59641", "assignerOrgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "state": "PUBLISHED", "assignerShortName": "bcorg", "dateReserved": "2026-07-06T06:58:29.263Z", "datePublished": "2026-08-03T00:54:21.151Z", "dateUpdated": "2026-08-03T13:26:05.888Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "shortName": "bcorg", "dateUpdated": "2026-08-03T05:04:21.202Z"}, "title": "S/MIME validator trusts signer-asserted signingTime for path validation", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-345", "description": "CWE-345 Insufficient Verification of Data Authenticity", "type": "CWE"}]}], "affected": [{"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-JAVA", "platforms": ["all"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/", "packageName": "bcmail", "repo": "https://github.com/bcgit/bc-java", "packageURL": "pkg:maven/org.bouncycastle/bcmail-jdk18on", "modules": ["mail"], "programFiles": ["SignedMailValidator"], "versions": [{"status": "affected", "version": "0", "lessThan": "1.85", "versionType": "maven"}], "defaultStatus": "unaffected"}, {"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-LTS-JAVA", "platforms": ["all"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/", "packageName": "bcmail-lts8on", "repo": "https://github.com/bcgit/bc-lts-java", "packageURL": "pkg:maven/org.bouncycastle/bcmail-lts8on", "modules": ["mail"], "programFiles": ["SignedMailValidator"], "versions": [{"status": "affected", "version": "2.73.0", "lessThan": "2.73.12", "versionType": "maven"}], "defaultStatus": "unaffected"}, {"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-FJA", "platforms": ["all"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "packageName": "bcmail-fips", "packageURL": "pkg:maven/org.bouncycastle/bcmail-fips", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.0.0", "lessThan": "2.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.1.0", "lessThan": "2.1.7", "versionType": "maven"}], "defaultStatus": "unaffected"}, {"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-FJA", "platforms": ["all"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "packageName": "bcjmail-fips", "packageURL": "pkg:maven/org.bouncycastle/bcjmail-fips", "versions": [{"status": "affected", "version": "1.0.4", "lessThan": "1.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.0.0", "lessThan": "2.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.1.0", "lessThan": "2.1.7", "versionType": "maven"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).</p>"}]}], "references": [{"url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059641", "tags": ["vendor-advisory"]}, {"url": "https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8", "tags": ["patch"]}, {"url": "https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721", "tags": ["patch"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "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": "AMBER", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber"}}], "credits": [{"lang": "en", "value": "Alex Gaynor in collaboration with Claude and Anthropic Research", "type": "reporter"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "bc release-notes template"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-03T13:25:56.639830Z", "id": "CVE-2026-59641", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-08-03T13:26:05.888Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-59641", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-03T13:25:56.639830Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-03T13:26:01.483Z"}}], "cna": {"title": "S/MIME validator trusts signer-asserted signingTime for path validation", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "reporter", "value": "Alex Gaynor in collaboration with Claude and Anthropic Research"}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/U:Amber", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "AMBER", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/bcgit/bc-java", "vendor": "Legion of the Bouncy Castle Inc.", "modules": ["mail"], "product": "BC-JAVA", "versions": [{"status": "affected", "version": "0", "lessThan": "1.85", "versionType": "maven"}], "platforms": ["all"], "packageURL": "pkg:maven/org.bouncycastle/bcmail-jdk18on", "packageName": "bcmail", "programFiles": ["SignedMailValidator"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/", "defaultStatus": "unaffected"}, {"repo": "https://github.com/bcgit/bc-lts-java", "vendor": "Legion of the Bouncy Castle Inc.", "modules": ["mail"], "product": "BC-LTS-JAVA", "versions": [{"status": "affected", "version": "2.73.0", "lessThan": "2.73.12", "versionType": "maven"}], "platforms": ["all"], "packageURL": "pkg:maven/org.bouncycastle/bcmail-lts8on", "packageName": "bcmail-lts8on", "programFiles": ["SignedMailValidator"], "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/", "defaultStatus": "unaffected"}, {"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-FJA", "versions": [{"status": "affected", "version": "1.0.0", "lessThan": "1.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.0.0", "lessThan": "2.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.1.0", "lessThan": "2.1.7", "versionType": "maven"}], "platforms": ["all"], "packageURL": "pkg:maven/org.bouncycastle/bcmail-fips", "packageName": "bcmail-fips", "collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "defaultStatus": "unaffected"}, {"vendor": "Legion of the Bouncy Castle Inc.", "product": "BC-FJA", "versions": [{"status": "affected", "version": "1.0.4", "lessThan": "1.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.0.0", "lessThan": "2.0.7", "versionType": "maven"}, {"status": "affected", "version": "2.1.0", "lessThan": "2.1.7", "versionType": "maven"}], "platforms": ["all"], "packageURL": "pkg:maven/org.bouncycastle/bcjmail-fips", "packageName": "bcjmail-fips", "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%9059641", "tags": ["vendor-advisory"]}, {"url": "https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8", "tags": ["patch"]}, {"url": "https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721", "tags": ["patch"]}], "x_generator": {"engine": "bc release-notes template"}, "descriptions": [{"lang": "en", "value": "In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).", "supportingMedia": [{"type": "text/html", "value": "<p>In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).</p>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-345", "description": "CWE-345 Insufficient Verification of Data Authenticity"}]}], "providerMetadata": {"orgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "shortName": "bcorg", "dateUpdated": "2026-08-03T05:04:21.202Z"}}}, "cveMetadata": {"cveId": "CVE-2026-59641", "state": "PUBLISHED", "dateUpdated": "2026-08-03T13:26:05.888Z", "dateReserved": "2026-07-06T06:58:29.263Z", "assignerOrgId": "91579145-5d7b-4cc5-b925-a0262ff19630", "datePublished": "2026-08-03T00:54:21.151Z", "assignerShortName": "bcorg"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java/", "defaultStatus": "unaffected", "modules": ["mail"], "packageName": "bcmail", "packageURL": "pkg:maven/org.bouncycastle/bcmail-jdk18on", "platforms": ["all"], "product": "BC-JAVA", "programFiles": ["SignedMailValidator"], "repo": "https://github.com/bcgit/bc-java", "vendor": "Legion of the Bouncy Castle Inc.", "versions": [{"lessThan": "1.85", "status": "affected", "version": "0", "versionType": "maven"}]}, {"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-lts/", "defaultStatus": "unaffected", "modules": ["mail"], "packageName": "bcmail-lts8on", "packageURL": "pkg:maven/org.bouncycastle/bcmail-lts8on", "platforms": ["all"], "product": "BC-LTS-JAVA", "programFiles": ["SignedMailValidator"], "repo": "https://github.com/bcgit/bc-lts-java", "vendor": "Legion of the Bouncy Castle Inc.", "versions": [{"lessThan": "2.73.12", "status": "affected", "version": "2.73.0", "versionType": "maven"}]}, {"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "defaultStatus": "unaffected", "packageName": "bcmail-fips", "packageURL": "pkg:maven/org.bouncycastle/bcmail-fips", "platforms": ["all"], "product": "BC-FJA", "vendor": "Legion of the Bouncy Castle Inc.", "versions": [{"lessThan": "1.0.7", "status": "affected", "version": "1.0.0", "versionType": "maven"}, {"lessThan": "2.0.7", "status": "affected", "version": "2.0.0", "versionType": "maven"}, {"lessThan": "2.1.7", "status": "affected", "version": "2.1.0", "versionType": "maven"}]}, {"collectionURL": "https://www.bouncycastle.org/download/bouncy-castle-java-fips/", "defaultStatus": "unaffected", "packageName": "bcjmail-fips", "packageURL": "pkg:maven/org.bouncycastle/bcjmail-fips", "platforms": ["all"], "product": "BC-FJA", "vendor": "Legion of the Bouncy Castle Inc.", "versions": [{"lessThan": "1.0.7", "status": "affected", "version": "1.0.4", "versionType": "maven"}, {"lessThan": "2.0.7", "status": "affected", "version": "2.0.0", "versionType": "maven"}, {"lessThan": "2.1.7", "status": "affected", "version": "2.1.0", "versionType": "maven"}]}], "source": "91579145-5d7b-4cc5-b925-a0262ff19630"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*", "matchCriteriaId": "FA6A5663-2E62-44AA-8A64-A3CB0DC8813B", "versionEndExcluding": "1.85", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcjmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "8A54A2DB-3346-43B7-A019-C8ACA36E9139", "versionEndExcluding": "1.0.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcjmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "A6F72DA1-77BC-4154-8447-D5CB55F1C5B1", "versionEndExcluding": "2.0.7", "versionStartIncluding": "2.0.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcjmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "AAC24E05-AF82-47F6-87B1-81B6717E86F1", "versionEndExcluding": "2.1.7", "versionStartIncluding": "2.1.6", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "0457821F-6E6C-4887-81F1-CD5A31BD233B", "versionEndExcluding": "1.0.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "BC4154F2-2ECD-4D3A-9726-8873E778BE60", "versionEndExcluding": "2.0.7", "versionStartIncluding": "2.0.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bcmail-fips:*:*:*:*:*:*:*:*", "matchCriteriaId": "5052B8CA-A66B-4D70-B4FD-079D5041C2AC", "versionEndExcluding": "2.1.7", "versionStartIncluding": "2.1.6", "vulnerable": true}, {"criteria": "cpe:2.3:a:bouncycastle:bouncy_castle_for_java_lts:*:*:*:*:*:*:*:*", "matchCriteriaId": "F5ED4F42-08FF-4642-815D-1ED0C82FDBD2", "versionEndIncluding": "2.73.11", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Bouncy Castle for Java before 1.85, S/MIME validator trusts signer-asserted signingTime for path validation. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcmail-fips and bcjmail-fips 1.0.7 (1.0.X series), 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series)."}], "id": "CVE-2026-59641", "lastModified": "2026-08-28T18:09:14.440", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "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": "AMBER", "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:N/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:Amber", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "91579145-5d7b-4cc5-b925-a0262ff19630", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59641", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-03T13:25:56.639830Z", "version": "2.0.3"}}]}, "published": "2026-08-03T01:16:44.060", "references": [{"source": "91579145-5d7b-4cc5-b925-a0262ff19630", "tags": ["Patch"], "url": "https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8"}, {"source": "91579145-5d7b-4cc5-b925-a0262ff19630", "tags": ["Patch"], "url": "https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721"}, {"source": "91579145-5d7b-4cc5-b925-a0262ff19630", "tags": ["Third Party Advisory"], "url": "https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059641"}], "sourceIdentifier": "91579145-5d7b-4cc5-b925-a0262ff19630", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}], "source": "91579145-5d7b-4cc5-b925-a0262ff19630", "type": "Secondary"}]}

{}