CVE-2026-58063

BCFKS keystore load honours unbounded KDF cost from untrusted file

State: Published
Severity: 5.3 Medium
Published: Aug 3, 2026
Updated: Aug 3, 2026
Reserved: Jun 28, 2026

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).

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Amber	bcorg

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
BC-JAVALegion of the Bouncy Castle Inc.	before 1.85Affected
BC-LTS-JAVALegion of the Bouncy Castle Inc.	2.73.0 to before 2.73.12Affected
BC-FJALegion of the Bouncy Castle Inc.	1.0.0 to before 1.0.2.7Affected 2.0.0 to before 2.0.2Affected 2.1.0 to before 2.1.3Affected

References

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