Web Application Security Flaws: OWASP Top 10 and modern attack vectors — May 20, 2026

Published 20 May 2026 · vulnerability, exploit, web security, owasp, cybersecurity news

The Current State of Web Application Security Flaws in Late 2025 As we navigate late 2025 and push into 2026, the web application threat landscape continues its relentless evolution. The days of simple SQLi and XSS being the primary concerns are long gone, though these classics still represent a significant portion of our incident response caseload. What I'm seeing now, on the front lines, is a more sophisticated adversary leveraging complex business logic flaws, API vulnerabilities, and increasingly, supply chain compromises. The rapid adoption of microservices, serverless architectures, and single-page applications (SPAs) has democratized application development, shrinking time-to-market but simultaneously expanding the attack surface in ways many organizations are still struggling to grasp. We're grappling with polyglot persistence layers, GraphQL endpoints exposing internal schema de