State of API Security 2026: real-world vulnerabilities in an AI-driven world.

A data-driven analysis of real API vulnerabilities curated by the APIsecurity.io editorial team, showing how common implementation mistakes turn into production security risk.

• Broken input validation — the most common category of API flaws, covering injection, mass assignment, and path traversal.
• BOLA & BFLA failures — why broken authorization remains a leading risk.
• Missing authentication — the single most frequently reported vulnerability.
• How the top flaws line up against the OWASP API Security Top 10.
• The “trusted client” fallacy, and why shadow-API exploits are rarer than assumed.