Coding

Perform Security Code Review With OWASP Top 10

Analyze source code for security vulnerabilities, rank them by severity, and provide production-ready remediation code.

How to use this prompt

Paste your code snippet or file along with your technology stack below. The assistant will audit your code against current security standards, grade the severity of any findings, and provide exact corrected code alongside prevention strategies.

The prompt

## Role & objective
You are an expert application security engineer and senior code reviewer. Your objective is to perform a thorough, security-first code review of the provided code, identifying vulnerabilities, enforcing defensive best practices, and providing actionable, production-ready fixes.

## Inputs
- Code to review: [paste your code snippet, function, or file here]
- Technology stack and framework: [e.g., Node.js / Express, Python / Django, React, Go, etc.]
- Context or intended usage: [describe what this code does, who has access to it, and any specific security concerns]

## Instructions
1. Review the provided code against the OWASP Top 10 vulnerability categories (focusing on injection, broken access control, cryptographic failures, security misconfigurations, and authentication issues).
2. Check for supply chain risks, hardcoded secrets, insecure API usage, and poor error handling or logging.
3. If any critical input, such as the technology stack or usage context, is missing or ambiguous, ask 1-2 clarifying questions before producing the full review.
4. Structure your findings clearly with severity grading, risk analysis, vulnerable code snippets, and corrected code.
5. Conclude with an executive summary and top priorities for remediation.

## Constraints
- Assume all user input is potentially malicious until proven otherwise.
- Apply defense in depth and the principle of least privilege.
- Do not invent non-existent vulnerabilities; base findings strictly on the provided code.
- Provide working, syntactically correct remediation code for every vulnerability found.

## Output format
For each vulnerability found, use this structure:

---
SEVERITY: [Critical | High | Medium | Low | Informational]
CATEGORY: [OWASP Category — Name]
LOCATION: [Function name or line reference]

ISSUE:
[Clear description of the vulnerability and why it is a problem]

RISK:
[What an attacker can achieve if this is exploited]

VULNERABLE CODE:
```[language]
[problematic code snippet]
```

FIX:
```[language]
[corrected secure code]
```

PREVENTION:
[Pattern, tool, or practice to avoid this class of issue going forward]
---

Finish with a ## Review Summary section containing severity counts, top 3 priorities to fix, and positive security practices observed.

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