Fluid Attacks Database

Description

In Bouncy Castle for Java before 1.85, BCFKS keystore load honours unbounded KDF cost from untrusted file. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bc-fips 1.0.2.7 (1.0.X series), 2.0.2 (2.0.X series) and 2.1.3 (2.1.X series).

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Component	Affected version	Patched versions
debian 14	bouncycastle	=1.80-3 \|\| >=0 <1.86-1	1.86-1
maven	org.bouncycastle:bc-fips-debug	>=1.0.0 <1.0.2.7 \|\| >=2.0.0 <2.0.2 \|\| >=2.1.0 <2.1.3	1.0.2.7, 2.0.2, 2.1.3
maven	org.bouncycastle:bc-fips	>=1.0.0 <1.0.2.7 \|\| >=2.0.0 <2.0.2 \|\| >=2.1.0 <2.1.3	1.0.2.7, 2.0.2, 2.1.3
maven	org.bouncycastle:bcprov-jdk14	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcprov-jdk18on	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcprov-jdk15to18	>=0 <1.85.0	1.85.0
maven	org.bouncycastle:bcprov-lts8on	>=2.73.0 <2.73.12	2.73.12
rpm rhel9	jmc	-	-
debian 13	bouncycastle	=1.80-3 \|\| =1.86-1	-
debian 12	bouncycastle	=1.72-2 \|\| =1.77-1 \|\| =1.80-1 \|\| =1.80-2 \|\| =1.80-3 \|\| =1.86-1	-

Aliases

1. CVE-2026-580632. NVD-2026-580633. OSV-DEBIAN-2026-580634. OSV-2026-580635. GCVE-2026-580636. SECURITY-TRACKER-CVE-2026-580637. https://github.com/bcgit/bc-java/wiki/CVE-2026-58063

References

1. https://github.com/bcgit/bc-java/commit/81737a56ef4489da1f849cf549df95e338ea6b06

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