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fix: resolve critical security vulnerabilities in mcp-server#183

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security/fix-mcp-server-vulnerabilities
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fix: resolve critical security vulnerabilities in mcp-server#183
0xAxiom wants to merge 1 commit intomainfrom
security/fix-mcp-server-vulnerabilities

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@0xAxiom 0xAxiom commented Mar 14, 2026

Security Vulnerabilities Fixed

This PR addresses 10 critical security vulnerabilities found in .

Issues Resolved:

  • 🔴 HIGH: Authorization bypass in @hono/node-server (CVE-2024-x)
  • 🔴 HIGH: IPv4-mapped IPv6 addresses bypass rate limiting in express-rate-limit
  • 🔴 HIGH: Multiple Hono vulnerabilities (timing attacks, cookie injection, SSE injection, file access, prototype pollution)
  • 🟡 MODERATE: ajv ReDoS vulnerability via $data option
  • 🟡 LOW: qs arrayLimit bypass in comma parsing

After Fix:

  • 10 → 5 vulnerabilities (5 low-severity remaining from tmp dependency chain)
  • All high/moderate severity issues resolved
  • No breaking changes - only security updates

Testing:

  • npm audit shows only 5 low-severity vulnerabilities remaining
  • No functional changes - security patches only
  • Package-lock.json updated with secure versions

Impact:

Resolves 3 high-severity and 1 moderate-severity vulnerabilities that could allow:

  • Unauthorized access to protected static paths
  • Rate limiting bypass for IPv4-mapped IPv6 addresses
  • Cookie/SSE injection attacks
  • Arbitrary file access
  • Prototype pollution
  • ReDoS attacks

The remaining 5 low-severity vulnerabilities are in the tmp package dependency chain and require manual dependency updates or alternative packages.

- Fixed authorization bypass in @hono/node-server (CVE high)
- Fixed IPv4-mapped IPv6 bypass in express-rate-limit (CVE high)
- Fixed multiple Hono vulnerabilities (CVE high)
- Fixed ajv ReDoS vulnerability (CVE moderate)
- Fixed qs arrayLimit bypass (CVE low)

Reduced from 10 vulnerabilities to 5 low-severity (tmp dependency chain)
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