CVE-2026-59643: Bouncycastle Bc-Java

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

In Bouncy Castle for Java before 1.85, OpenPGP inline-signature policy failures silently ignored. This issue also affects Bouncy Castle for Java FIPS (BC-FJA) before bcpg-fips 2.0.13.

Affected products

• Bouncycastle Bc-Java: before 1.85 (fixed in 1.85)
• Bouncycastle Bcpg-Fips: before 2.0.13 (fixed in 2.0.13)

Published 2026-08-03. Last modified 2026-09-10.