CVE-2026-73829

ZenHive mpp (Elixir MPP library) versions 0.2.0 through 0.6.0 contain a TOCTOU race condition in the type="hash" credential path of MPP.Methods.Tempo.verify/2. The dedup check-then-mark sequence is non-atomic: check_hash_unused/2 reads the store, an on-chain receipt is verified, and only then doe...