CVE-2026-59640

A flaw was found in Bouncy Castle for Java. A remote attacker can exploit an OpenPGP Open Pretty Good Privacy Cipher Feedback CFB quick-check oracle vulnerability. This oracle, active on symmetric and session-key paths, could allow an attacker to gain sensitive information by observing the result...

CVE-2026-59640

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcpg-fips 1.0.13 1.0.X series, 2.0.13 2.0.X series and 2.1.13 2.1.X series...