V3 Security Overhaul Skill for Claude
Complete security architecture overhaul for claude-flow v3. Addresses critical CVEs (CVE-1, CVE-2, CVE-3) and implements secure-by-default patterns. Use for security-first v3 implementation.
Install
one command, takes just this skill from the repositorynpx skills add https://github.com/spencermarx/open-code-review --skill V3 Security OverhaulThe instruction itself
12 sections, as written by the authorV3 Security Overhaul
What This Skill Does
Orchestrates comprehensive security overhaul for claude-flow v3, addressing critical vulnerabilities and establishing security-first development practices using specialized v3 security agents.
Quick Start
# Initialize V3 security domain (parallel)
Task("Security architecture", "Design v3 threat model and security boundaries", "v3-security-architect")
Task("CVE remediation", "Fix CVE-1, CVE-2, CVE-3 critical vulnerabilities", "security-auditor")
Task("Security testing", "Implement TDD London School security framework", "test-architect")
Critical Security Fixes
CVE-1: Vulnerable Dependencies
npm update @anthropic-ai/claude-code@^2.0.31
npm audit --audit-level high
CVE-2: Weak Password Hashing
// ❌ Old: SHA-256 with hardcoded salt
const hash = crypto.createHash('sha256').update(password + salt).digest('hex');
// ✅ New: bcrypt with 12 rounds
import bcrypt from 'bcrypt';
const hash = await bcrypt.hash(password, 12);
CVE-3: Hardcoded Credentials
// ✅ Generate secure random credentials
const apiKey = crypto.randomBytes(32).toString('hex');
Security Patterns
Input Validation (Zod)
import { z } from 'zod';
const TaskSchema = z.object({
taskId: z.string().uuid(),
content: z.string().max(10000),
agentType: z.enum(['security', 'core', 'integration'])
});
Path Sanitization
function securePath(userPath: string, allowedPrefix: string): string {
const resolved = path.resolve(allowedPrefix, userPath);
if (!resolved.startsWith(path.resolve(allowedPrefix))) {
throw new SecurityError('Path traversal detected');
}
return resolved;
}
Safe Command Execution
import { execFile } from 'child_process';
// ✅ Safe: No shell interpretation
const { stdout } = await execFile('git', [userInput], { shell: false });
Success Metrics
- Security Score: 90/100 (npm audit + custom scans)
- CVE Resolution: 100% of critical vulnerabilities fixed
- Test Coverage: >95% security-critical code
- Implementation: All secure patterns documented and tested
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How to use it
Take spencermarx/v3 security overhaul from the repository into ~/.claude/skills for personal
use, or into .claude/skills inside a project.
The agent identifies a skill by the name field in its header. Two skills with the
same name cannot sit side by side — one of them will be ignored.