anthropics buffa

• CVE-2026-55407 Medium 6.3 Buffa: Memory Exhaustion Denial of Service in decode_unknown_field via Unbounded Allocation 0.8%
• CVE-2026-55406 Medium 5.9 Buffa: Use-After-Free in OwnedView via Unsound 'static Lifetime Promotion in Deref 0.2%