CVE-2026-59641
8.7
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
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Legion of the Bouncy Castle Inc. | BC-JAVA | 0 < 1.85 | affected |
| Legion of the Bouncy Castle Inc. | BC-LTS-JAVA | 2.73.0 < 2.73.12 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 1.0.0 < 1.0.7 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 2.0.0 < 2.0.7 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 2.1.0 < 2.1.7 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 1.0.4 < 1.0.7 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 2.0.0 < 2.0.7 | affected |
| Legion of the Bouncy Castle Inc. | BC-FJA | 2.1.0 < 2.1.7 | affected |
Weaknesses
- CWE-345: CWE-345 Insufficient Verification of Data Authenticity
References
- https://github.com/bcgit/bc-java/wiki/CVE-2026-59641
- https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def8
- https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721
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