Security Advisory MCP Server

Let your AI agents check for vulnerabilities. This MCP server queries the OSV.dev advisory database to search CVEs, map vulnerabilities to your dependencies, score risk, generate patch plans, and export compliance evidence.

What It Does

When your agent adds a dependency, reviews a PR, or audits a project, it can check for known security vulnerabilities and recommend fixes — using real advisory data from GitHub Advisory DB, RustSec, NVD, and more.

Architecture

Security Advisory MCP Architecture

Tools (6)

| Tool | What It Does | When To Use | |------|-------------|-------------| | search_advisories | Search by package, ecosystem, or keyword | "Are there vulnerabilities in hyper?" | | get_advisory | Get full details by CVE/GHSA/RUSTSEC/OSV ID | "Tell me about GHSA-5h46-h7hh-c6x9" | | map_vulnerability_to_dependency | Scan lockfile against advisory database | "Are any of our deps vulnerable?" | | rank_security_risk | Score practical risk (severity × exposure) | "How urgent is this vulnerability?" | | generate_patch_plan | Recommend upgrade path and rollout | "How do we fix this?" | | export_security_evidence | Bundle findings for audit/compliance | "Generate a security report" |

Verified Output

Tested against live OSV.dev:

> search_advisories(package: "hyper", ecosystem: "crates.io")

{ "count": 14, "advisories": [
  { "id": "GHSA-5h46-h7hh-c6x9", "summary": "Integer Overflow in Chunked Transfer-Encoding", "severity": "high" },
  { "id": "RUSTSEC-2024-0003", "summary": "Lenient HTTP/1 parsing allows request smuggling", "severity": "medium" }
]}

> get_advisory(id: "GHSA-5h46-h7hh-c6x9")

{ "id": "GHSA-5h46-h7hh-c6x9", "summary": "Integer Overflow in Chunked Transfer-Encoding",
  "affected": [{ "package": "hyper", "ecosystem": "crates.io", "ranges": [{"fixed": "0.14.10"}] }],
  "source_url": "https://osv.dev/vulnerability/GHSA-5h46-h7hh-c6x9" }

> rank_security_risk(advisory_id: "GHSA-5h46-h7hh-c6x9", direct_dependency: true, internet_exposed: true)

{ "risk_score": 5.5, "priority": "medium",
  "recommendation": "Schedule patch in next sprint. Monitor for exploit development." }

> generate_patch_plan(advisory_id: "GHSA-5h46-h7hh-c6x9", package: "hyper", current_version: "0.14.0")

{ "action": "upgrade", "fixed_version": "0.14.10",
  "steps": ["1. Update to 0.14.10", "2. Run tests", "3. Review changelog", "4. Deploy staging → production"] }

> map_vulnerability_to_dependency(path: "/my-project")

{ "packages_scanned": 267, "vulnerable_packages": 2,
  "findings": [{ "package": "hyper", "installed_version": "0.14.0", "advisories_found": 3 }] }

Supported Identifiers

| Type | Example | Source | |------|---------|--------| | CVE | CVE-2023-26964 | NVD / MITRE | | GHSA | GHSA-5h46-h7hh-c6x9 | GitHub Advisory DB | | RUSTSEC | RUSTSEC-2024-0003 | RustSec | | OSV | OSV-2023-1234 | OSV.dev |

Supported Ecosystems

crates.io · npm · PyPI · Go · Maven · NuGet · Packagist · RubyGems

Supported Lockfiles

| File | Ecosystem | |------|-----------| | Cargo.lock | Rust | | package-lock.json | npm | | requirements.txt | Python | | go.sum | Go |

Installation

1. Build

git clone https://github.com/zavora-ai/mcp-security-advisory
cd mcp-security-advisory
cargo build --release

No API key needed — OSV.dev is a free, open database.

2. Add to your MCP client

Claude Desktop / Kiro / Cursor / Windsurf:

{
  "mcpServers": {
    "security": {
      "command": "/path/to/mcp-security-advisory"
    }
  }
}

3. Use it

Ask your agent:

"Are there any known vulnerabilities in our dependencies?"
"Tell me about CVE-2023-26964"
"How risky is this vulnerability for us?"
"Generate a patch plan for GHSA-5h46-h7hh-c6x9"
"Export a security report for compliance"

Risk Scoring Model

The rank_security_risk tool uses a weighted factors model:

| Factor | Weight | Description | |--------|--------|-------------| | Severity (CVSS) | 40% | Base vulnerability severity | | Direct dependency | +1.5 | Direct dep vs transitive | | Internet exposed | +2.0 | Service faces the internet | | Known exploit | +2.5 | Exploit exists in the wild |

Score 0-10: critical (≥8) · high (≥6) · medium (≥4) · low (<4)

Provenance

Every response includes provenance metadata:

source — where the data came from (osv.dev)
queried_at — timestamp of the query
confidence — data reliability indicator
identifier_type — CVE/GHSA/RUSTSEC/OSV

MCP Server Manifest

server_id = "mcp_security_advisory"
display_name = "Security Advisory MCP"
version = "1.0.0"
domain = "developer"
risk_level = "low"
writes_allowed = "artifact_producing"
transports = ["stdio"]
governance_gates = []

Contributors

|
_{James Karanja Maina} | |:---:|

License

Apache-2.0 — see LICENSE for details.

Part of the ADK-Rust Enterprise MCP server ecosystem.

Registry Compliance

This server implements the ADK MCP SDK contract:

HealthCheck — async health probe for registry monitoring
mcp-server.toml — manifest declaring tools, risk classes, and credentials
Structured tracing — RUST_LOG env-filter for observability

MCP Servers