CVE-2026-59642

A flaw was found in Bouncy Castle for Java. This vulnerability allows a remote attacker to bypass cryptographic integrity checks in the Cryptographic Message Syntax CMS AuthenticatedData content without requiring user interaction or elevated privileges. Specifically, when authentication attribute...

Improper Validation of Integrity Check Value

Overview Affected versions of this package are vulnerable to Improper Validation of Integrity Check Value in the getContentStream method of RecipientInformation, which, when authenticated attributes are present, authenticates only the DER-encoded authAttrs and never checks the computed content...

CVE-2026-59642

In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present. 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 seri...

CVE-2026-59642 CMS AuthenticatedData content not bound to MAC when authAttrs present

In Bouncy Castle for Java before 1.85, CMS AuthenticatedData content not bound to MAC when authAttrs present. 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 seri...