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Security Code Review
Review code for security vulnerabilities by following the full procedure in plays/code-review-security.md.
Steps
- Scope & Context — Establish language/framework, trust boundary (server/client/library/CLI), data sensitivity (PII, credentials, financial), and exposure (internet-facing, internal, local).
- Systematic Review by Vulnerability Class (priority order):
- Injection (A03) — SQL, command, XSS, SSTI, LDAP, path traversal, header, log injection
- Authentication & Session (A07) — Hardcoded credentials, missing auth, weak sessions, JWT issues
- Authorization (A01) — Missing authz checks, IDOR, horizontal/vertical privilege escalation
- Cryptography (A02) — Weak algorithms, hardcoded keys, missing encryption, custom crypto
- Data Exposure (A01) — Sensitive data in errors/logs, credentials in code, debug mode
- Misconfiguration (A05) — Default credentials, permissive CORS, missing security headers
- Deserialization (A08) — Untrusted deserialization, missing integrity checks, CSRF gaps
- Framework-Specific Checks — Apply checks for detected framework (React, Express, Django, Flask, Spring, Rails, Go).
- Diff-Specific Analysis (for PRs) — Focus on changed lines plus context, verify security controls preserved, check new endpoints match auth patterns, look for removed security controls.
- Produce Findings — Cite file:line, show vulnerable snippet, explain attack scenario, provide fixed code, rate confidence.
Output
Scope summary, findings sorted by severity using templates/finding.md, positive observations (good security controls in place), and severity count table.
OWASP References
- OWASP Top 10 (2021): A01-A10
- OWASP ASVS v5.0
- OWASP Code Review Guide
- OWASP Cheat Sheet Series
