GHSA-9M44-RR2W-PPP7 Swift Crypto: X-Wing HPKE Decapsulation Accepts Malformed Ciphertext Length

Summary The X-Wing decapsulation path accepts attacker-controlled encapsulated ciphertext bytes without enforcing the required fixed ciphertext length. The decapsulation call is forwarded into a C API, which expects a compile-time fixed-size ciphertext buffer of 1120 bytes. This creates an FFI...