Bug 2510196 (CVE-2026-59641) - CVE-2026-59641 bouncycastle: bcmail-fips: bcjmail-fips: Bouncy Castle for Java: S/MIME signature validation bypass via signer-asserted signing time
Summary: CVE-2026-59641 bouncycastle: bcmail-fips: bcjmail-fips: Bouncy Castle for Jav...
Keywords:
Status: NEW
Alias: CVE-2026-59641
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2524915 2524924
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-03 02:01 UTC by OSIDB Bzimport
Modified: 2026-08-27 10:46 UTC (History)
23 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-03 02:01:41 UTC 
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).
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