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CVE-2026-59641

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).
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3254e06dee11d7701b030791f757a5bd0baac4731edfd763650707e7aa86b550
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 4 assertions

{"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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/0

{"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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/1

{"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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/3

{"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"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/2

Affected products and versions

4 source assertions
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/0
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/1
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/3
{"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"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/affected/2

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","exploitMaturity":"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/U:Amber","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-345","description":"CWE-345 Insufficient Verification of Data Authenticity","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"tags":["patch"],"url":"https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/references/1
{"tags":["patch"],"url":"https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/references/2
{"tags":["vendor-advisory"],"url":"https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902026%E2%80%9059641"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:62374c659449c7ebd2008f90a130c64d0ecbc2535213c494c4e8b3169f5642af · sha256:c852824ea4274c14… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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