CVE-2026-59645: Bouncycastle Bc-Java

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

In Bouncy Castle for Java before 1.85, OER parser recurses without depth limit on self-referential IEEE 1609.2 schema. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS (BC-FJA) before bcutil-fips 2.0.7 (2.0.X series) and 2.1.7 (2.1.X series).

Affected products

• Bouncycastle Bc-Java: before 1.85 (fixed in 1.85)
• Bouncycastle Bcutil-Fips: from 2.0.2, before 2.0.7 (fixed in 2.0.7); from 2.1.4, before 2.1.7 (fixed in 2.1.7)
• Bouncycastle Bouncy Castle For Java LTS: up to and including 2.73.11

Published 2026-08-03. Last modified 2026-08-28.