Fluid Attacks Database

Description

In Bouncy Castle for Java before 1.85, OpenPGP user-attribute subpacket length bounded only by JVM max memory. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 1.0.13 (1.0.X series), 2.0.13 (2.0.X series) and 2.1.13 (2.1.X series).

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
debian 12	bouncycastle	=1.72-2 \|\| =1.77-1 \|\| =1.80-1 \|\| =1.80-2 \|\| =1.80-3 \|\| =1.86-1	-
debian 14	bouncycastle	=1.80-3 \|\| >=0 <1.86-1	1.86-1
maven	org.bouncycastle:bcpg-fips	>=1.0.0 <1.0.13 \|\| >=2.0.8 <2.0.13 \|\| >=2.1.10 <2.1.13	1.0.13, 2.0.13, 2.1.13
maven	org.bouncycastle:bcpg-jdk14	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcpg-jdk15to18	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcpg-jdk18on	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcpg-lts8on	>=2.73.0 <2.73.12	2.73.12
rpm rhel9	jmc	-	-
debian 13	bouncycastle	=1.80-3 \|\| =1.86-1	-

Aliases

1. CVE-2026-596492. NVD-2026-596493. OSV-DEBIAN-2026-596494. OSV-2026-596495. GCVE-2026-596496. SECURITY-TRACKER-CVE-2026-596497. https://github.com/bcgit/bc-java/wiki/CVE-2026-59649

References

1. https://github.com/bcgit/bc-java/commit/a43c40dc12c3e1c6cbd03c83fe30aaec4029b824

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