CVE-2026-59644

CVE-2026-59644 affects Bouncy Castle for Java up to version 1.84, where the MLS hash-ratchet may honor an arbitrary 32-bit generation counter from the sender. This can impact availability (per CVSS: HIGH) with no confidentiality or integrity impact reported, and no exploitation details are provid...

PT-2026-67237

Name of the Vulnerable Software and Affected Versions Bouncy Castle for Java versions prior to 1.85 Description The MLS hash-ratchet mechanism accepts an arbitrary 32-bit generation counter provided by the sender. A hash-ratchet is a cryptographic process used to derive new keys for each message ...