CVE-2026-12817

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) bcpg-fips versions prior to 1.0.13 Bouncy Castle for Java FIPS (BC-FJA) bcpg-fips versions prior to 2.0.13 Bouncy Castle for Java FIPS (BC-FJA) bcpg-fips versions prior to 2.1.13

Description OpenPGP AEAD (Authenticated Encryption with Associated Data) decryption skips the final tag when processing chunk-aligned data.

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) bcpg-fips to version 1.0.13 or later for the 1.0.X series. Update Bouncy Castle for Java FIPS (BC-FJA) bcpg-fips to version 2.0.13 or later for the 2.0.X series. Update Bouncy Castle for Java FIPS (BC-FJA) bcpg-fips to version 2.1.13 or later for the 2.1.X series.