Web Application Security Flaws: OWASP Top 10 and modern attack vectors — September 19, 2026

Published 19 Sep 2026 · vulnerability, exploit, web security, owasp, cybersecurity news

AGMP Partners The Current State of Web Application Security Flaws in Late 2025 As we stand in September 2026, the web application threat landscape has shifted significantly, even since the last major OWASP Top 10 refresh. While the fundamental categories of vulnerabilities persist – SQLi, XSS, broken access control – the attack surface has expanded, and attacker sophistication has reached new heights. We're seeing a convergence of traditional application flaws with supply chain vulnerabilities, misconfigured cloud-native components, and increasingly, AI/ML model poisoning attacks targeting embedded logic. The proliferation of APIs, particularly GraphQL and gRPC, has opened up novel attack vectors that often bypass traditional WAF signatures. Moreover, the move to microservices architectures, while offering agility, often introduces a labyrinth of inter-service communication that’s incred