CVE-2026-13506

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Bouncy Castle for Java LTS versions prior to 2.73.12 Bouncy Castle for Java FIPS (BC-FJA) versions prior to 1.0.2.7 Bouncy Castle for Java FIPS (BC-FJA) versions prior to 2.0.2 Bouncy Castle for Java FIPS (BC-FJA) versions prior to 2.1.3

Description Lazy ASN.1 sequence forcing resets the nesting-depth guard. ASN.1 (Abstract Syntax Notation One) is a standard interface for describing data structures that can be translated into any computer-readable format.

Recommendations Update Bouncy Castle for Java to version 1.85 or later. Update Bouncy Castle for Java LTS to version 2.73.12 or later. Update Bouncy Castle for Java FIPS (BC-FJA) 1.0.X series to version 1.0.2.7 or later. Update Bouncy Castle for Java FIPS (BC-FJA) 2.0.X series to version 2.0.2 or later. Update Bouncy Castle for Java FIPS (BC-FJA) 2.1.X series to version 2.1.3 or later.