OWASP Top 10 Reference Regex for Python

What this pattern does

This page provides a lightweight, single-purpose regular expression for matching owasp top 10 reference, ported and verified for Python. In security-sensitive code, using an unverified regex can open the door to both false positives and denial-of-service attacks. The snippet below is ready to drop into your Python project — whether you're validating in a Django view, a FastAPI endpoint, or a standalone data processing script.

Python Implementation

# OWASP Top 10 Reference
# ReDoS-safe | RegexVault — Security > Audit & Compliance

import re

owasp_top_10_reference_pattern = re.compile(r'^A(?:0[1-9]|10):2021$')

def validate_owasp_top_10_reference(value: str) -> bool:
    return bool(owasp_top_10_reference_pattern.fullmatch(value))

# Example
print(validate_owasp_top_10_reference("A01:2021"))  # True

Test Cases

When to use this pattern

This pattern is drawn from the Security > Audit & Compliance category and carries a ReDoS-safe certification. That matters for Python developers because particularly important in Python web servers where CPU-bound regex operations can stall concurrent request handling. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

OWASP Top 10 2021: A01=Broken Access Control, A02=Cryptographic Failures, A03=Injection, A04=Insecure Design, A05=Security Misconfiguration, A06=Vulnerable/Outdated Components, A07=Identification/Authentication Failures, A08=Software/Data Integrity Failures, A09=Security Logging/Monitoring Failures, A10=Server-Side Request Forgery.