CVE-2026-15055

PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input

State: Published
Severity: 5.3 Medium
Published: Aug 3, 2026
Updated: Aug 3, 2026
Reserved: Jul 8, 2026

Description

In Bouncy Castle for Java before 1.85, PKCS#8 / PBES2 decryptors honour unbounded KDF cost from input. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcpkix-fips 1.0.12 (1.0.X series), 2.0.12 (2.0.X series) and 2.1.12 (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 1.0.12Affected 2.0.0 to before 2.0.12Affected 2.1.0 to before 2.1.12Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.