fix_vulnerability · Security-Use MCP Server MCP

WHAT IT DOES

What fix_vulnerability does on Security-Use MCP Server

AI agents use fix_vulnerability to create or update resources in Security-Use MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Security-Use MCP Server environment.

WHY IT NEEDS A POLICY

Why fix_vulnerability needs a policy

This tool modifies project dependency files by updating package versions to remediate vulnerabilities. This is a Write operation (reversible modification of configuration/dependency files). Severity is high because an AI agent could misuse it to update dependencies to unexpected versions, potentially breaking builds or introducing incompatibilities across a project.

From the tool's definition Fix a detected dependency vulnerability by updating to a safe version

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

fix_vulnerability Rate-limited

fix_vulnerability stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "fix_vulnerability": {
      "limits": [
        {
          "counter": "fix_vulnerability_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Security-Use MCP Server, so you can run agents against it safely.

FAQ

Questions about fix_vulnerability

What does the fix_vulnerability tool do? +

Fix a detected dependency vulnerability by updating to a safe version. It is categorised as a Write tool in the Security-Use MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on fix_vulnerability? +

Register the Security-Use MCP Server MCP server in PolicyLayer and add a rule for fix_vulnerability: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Security-Use MCP Server. Nothing to install.

What risk level is fix_vulnerability? +

fix_vulnerability is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit fix_vulnerability? +

Yes. Add a rate_limit block to the fix_vulnerability rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block fix_vulnerability completely? +

Set action: deny in the PolicyLayer policy for fix_vulnerability. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides fix_vulnerability? +

fix_vulnerability is provided by the Security-Use MCP Server MCP server (security-use/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.