CVE-2026-59642

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) bcpkix-fips versions prior to 1.0.12 Bouncy Castle for Java FIPS (BC-FJA) bcpkix-fips versions prior to 2.0.12 Bouncy Castle for Java FIPS (BC-FJA) bcpkix-fips versions prior to 2.1.12

Description CMS AuthenticatedData content is not bound to the Message Authentication Code (MAC) when authentication attributes (authAttrs) are present.

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) bcpkix-fips to version 1.0.12 or later for the 1.0.X series. Update Bouncy Castle for Java FIPS (BC-FJA) bcpkix-fips to version 2.0.12 or later for the 2.0.X series. Update Bouncy Castle for Java FIPS (BC-FJA) bcpkix-fips to version 2.1.12 or later for the 2.1.X series.