Updated with $3.67B in 2025 loss data and four new categories. The definitive smart contract risk standard - now covering Business Logic, Proxy Vulnerabilities, Oracle Manipulation, and Flash Loans as standalone risks.
The Open Web Application Security Project (OWASP) has been the gold standard for web security since 2001. Their Top 10 lists have guided millions of developers in building secure applications.
The most critical security risks facing smart contracts and Web3 applications in 2026, ranked by exploitability, prevalence, and financial impact across 134 documented incidents.
At CredShields, thousands of contracts are scanned via SolidityScan and monitored through Web3HackHub. Our comprehensive reports were key inputs for the OWASP Smart Contract Top 10.
~3.67 Billion USD lost across 134 security incidents. Four new categories in the 2026 list each represent attack vectors that surpassed the $100M individual threshold in 2025.
The 2026 edition adds four new standalone categories - Business Logic Errors, Oracle Manipulation, Flash Loan Attacks, and Proxy & Upgrade Vulnerabilities - each driven by $100M+ loss clusters in 2025. Rankings across all ten categories were updated based on 134 incidents and $3.67B in tracked losses from the 2025 Web3HackHub dataset.
The 2025 edition established the baseline top 10. The 2026 edition reflects a materially changed threat landscape: flash loan attacks, proxy vulnerabilities, and business logic errors have each grown into distinct, high-impact categories that warrant separate audit focus. Total tracked losses grew from $1.42B (2024) to $3.67B (2025) - a 158% increase.
The 2026 update was developed by CredShields researchers in collaboration with the OWASP Foundation. The ranking methodology uses empirical data from 50,000+ contracts scanned via SolidityScan and 134 real-world incidents tracked via Web3HackHub through 2025. New categories were added only where multiple high-value incidents confirmed the pattern as a systemic, not isolated, risk.
Yes. Every CredShields smart contract audit explicitly maps findings to the OWASP SC Top 10 2026 categories. The audit report includes a coverage matrix showing which categories were tested, what was found, and the severity classification for each finding. Free AI-powered pre-screening is available via SolidityScan before you engage for a full manual audit.
Adoption is accelerating. Institutional investors, crypto exchanges, and DeFi protocols increasingly cite the OWASP SC Top 10 in their security requirements and listing criteria. With MiCA enforcement underway in the EU and similar frameworks developing globally, audits mapped to OWASP categories provide the clearest compliance evidence available for smart contract security.
It can be embedded into:
Many teams map their controls against each category to ensure systematic coverage.
Yes. Static analyzers, AI-based scanners, fuzzers, and manual review methodologies can map findings to the Top 10 categories. This enables:
SolidityScan maps every finding to its corresponding OWASP SC Top 10 2026 category automatically.
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