OWASP Top 10 is required reading for every web developer. The list is backed by statistics, real attack logs and expert opinions from security professionals around the world. The 2026 edition differs noticeably from 2021, because the threat landscape has changed dramatically over the past five years. APIs, AI components and container environments have moved to the front.
A01 Broken Access Control
Access control issues still take first place. A user reaches a resource that does not belong to them, hits admin endpoints through direct URLs, or acts on behalf of another user — all of this falls into this category. Statistics show that 94 percent of audited sites contain such issues.
A02 Cryptographic Failures
Using outdated algorithms, storing passwords in plaintext or MD5, running HTTP instead of HTTPS — all of this counts as cryptographic failures. Starting in 2026, post-quantum cryptography is also part of this category: as quantum computers approach, RSA-2048 and weaker algorithms are flagged as risky.
A03 Injection
SQL injection, NoSQL injection, command injection and LDAP injection all sit here. The 2026 version also adds AI prompt injection. If a site has an LLM integration and a user can manipulate the prompt, this is a serious risk: an attacker can extract secrets or force the system into unintended actions.
A04 Insecure Design
This category is about problems not in the code but in the design. For example, a password reset function that reveals which usernames exist. Or plan limits that are checked only on the frontend. These issues cannot be closed with a quick bug fix — the process itself has to be rethought.
A05 Security Misconfiguration
Default passwords, exposed admin panels, indexable sensitive folders, missing security headers — all of this belongs here. This is the easiest category to fix, which is why many people ignore it.
A06 Vulnerable and Outdated Components
Old WordPress versions, unpatched libraries, outdated PHP. The 2017 Equifax breach happened exactly because of this — a single unpatched Apache Struts component led to the leak of 147 million users' data. In 2026, supply chain attacks have become even more dangerous.
A07-A10 briefly
Identification and Authentication Failures, Software and Data Integrity Failures, Security Logging and Monitoring Failures, Server-Side Request Forgery — the remaining four risks. Each has its own specifics, but the general rule is the same: defense in depth, multiple layers and constant monitoring.
Sayt.uz in practice
On Premium hosting plans, Sayt.uz includes automated OWASP Top 10 auditing as a standard feature. In the cabinet, every site receives a security grade from A to F with the specific OWASP category called out. WAF rules are tuned based on the OWASP Core Rule Set. Premium hosting starts at 1,200,000 soum per year, and corporate packages start at 3,500,000 soum. As of 2026, A01 and A03 issues among our customers have dropped by 78 percent.