State-Dependency Bug Exposes Critical Vulnerability in Legion Protocol's Vesting Architecture

Legion Protocol's epoch-based vesting mechanism contains a critical architectural flaw rooted in state-dependent calculations, enabling users to claim tokens multiple times while permanently losing funds due to precision loss. This vulnerability underscores the dangers of complex custom vesting designs and the absolute necessity of rigorous security audits before DeFi protocol deployment. The incident serves as a critical reminder that even theoretically sound tokenomics can harbor exploitable logic errors without proper formal verification and testing.