アクセス制御バイパス（Access Control Bypass）
High-quality technical overview of Access Control Bypass in the context of blockchain security.
Access control bypass occurs when flaws like IDOR or privilege escalation allow unauthorized users to act as admins or other users. It is ranked #1 in the OWASP Top 10. Common in both traditional web apps and Web3 smart contracts, it represents a breakdown in the logic that isolates user resources. In 2026, Zero Trust architectures are the primary defense against such bypasses.
graph LR
Center["アクセス制御バイパス（Access Control Bypass）"]:::main
Pre_authentication["authentication"]:::pre --> Center
click Pre_authentication "/terms/authentication"
Rel_zero_trust_security["zero-trust-security"]:::related -.-> Center
click Rel_zero_trust_security "/terms/zero-trust-security"
Rel_access_control_security["access-control-security"]:::related -.-> Center
click Rel_access_control_security "/terms/access-control-security"
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classDef pre fill:#0f172a,stroke:#3b82f6,color:#94a3b8,rx:5,ry:5;
classDef child fill:#0f172a,stroke:#10b981,color:#94a3b8,rx:5,ry:5;
classDef related fill:#0f172a,stroke:#8b5cf6,stroke-dasharray: 5 5,color:#94a3b8,rx:5,ry:5;
linkStyle default stroke:#4b5563,stroke-width:2px;
🧒 5歳でもわかるように説明
裏口の鍵が開いているのを見つけたり、警備員さんをだましてチケットなしでVIPルームに入ってしまうようなことです。
🤓 Expert Deep Dive
Bypasses happen at horizontal (IDOR) and vertical levels. They often stem from trusting client-side logic or failing to check ownership at the database level. Advanced 2026 security utilizes Policy-as-Code (OPA) and cryptographically enforced tenant isolation to prevent these architectural failures.