Fluid Attacks Database

Description

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).

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
maven	org.bouncycastle:bcjmail-fips	>=1.0.4 <1.0.7 \|\| >=2.0.5 <2.0.7 \|\| >=2.1.6 <2.1.7	1.0.7, 2.0.7, 2.1.7
maven	org.bouncycastle:bcjmail-jdk15to18	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcjmail-jdk18on	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcjmail-lts8on	>=2.73.0 <2.73.12	2.73.12
maven	org.bouncycastle:bcmail-fips	>=1.0.0 <1.0.7 \|\| >=2.0.5 <2.0.7 \|\| >=2.1.6 <2.1.7	1.0.7, 2.0.7, 2.1.7
maven	org.bouncycastle:bcmail-jdk15to18	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcmail-jdk18on	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcmail-lts8on	>=2.73.0 <2.73.12	2.73.12
debian 14	bouncycastle	=1.80-3 \|\| >=0 <1.86-1	1.86-1
debian 13	bouncycastle	=1.80-3 \|\| =1.86-1	-

1-10 of 11

Aliases

1. CVE-2026-596412. NVD-2026-596413. OSV-2026-596414. OSV-DEBIAN-2026-596415. GCVE-2026-596416. https://github.com/bcgit/bc-java/wiki/CVE-2026-596417. SECURITY-TRACKER-CVE-2026-59641

References

1. https://github.com/bcgit/bc-java/commit/2f81b22d559b3a1b026388e1ca78dd547384def82. https://github.com/bcgit/bc-java/commit/fd89fe918b37fea1c71e95fae50284a325b09721

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