Beyond Social (Farcaster)
Integrates with social platforms like Farcaster to provide standardized access to user profiles, content search, thread analysis, and trending topics through flexible stdio and HTTP/SSE transports.
0Tools
12Findings
13Stars
Mar 22, 2026Last Scanned
5 critical · 5 high · 1 medium · 1 low findings detected
Security Category Deep Dive
Prompt Injection
Prompt & context manipulation attacks
69
Maturity
14
Rules
5
Sub-Categories
1
Gaps
64%
Implemented
56
Tests
1
Stories
100%3 rules
Injection via tool descriptions and parameter fields
GAP-001Prompt Injection Coverage GapMissing detection coverage for emerging prompt injection attack variants not addressed by current rules
100%4 rules
Hidden instructions via external content and tool responses
100%2 rules
Context window saturation and prior-approval exploitation
100%3 rules
Payload hiding via invisible chars, base64, schema fields
100%2 rules
Injection via prompt templates and runtime tool output
Findings12
5critical
5high
1medium
1low
Critical5
criticalQ3Localhost MCP Service HijackingMCP07-insecure-configT1557
Pattern "cors\s*\(\s*\)(?!.*origin)" matched in source_code: "cors()" (at position 3992)
MCP servers binding to localhost must: (1) validate the Host header to prevent DNS rebinding attacks (CVE-2025-49596), (2) set strict CORS origins instead of wildcard '*', (3) require authentication tokens even for local connections, (4) use random high ports instead of predictable defaults. For stdio transport, validate all input at the JSON-RPC level before processing. Consider using Docker MCP Gateway or similar container isolation.
criticalJ2Git Argument InjectionMCP03-command-injectionAML.T0054
Pattern "--upload-pack|--receive-pack|--exec" matched in source_code: "--exec" (at position 5636)
Always terminate git argument lists with '--' before user-supplied paths. Never allow git_init on directories outside the configured workspace. Validate all git arguments against an allowlist. Block core.* config overrides in user-controlled inputs. See CVE-2025-68143/68144/68145 for the full attack chain.
criticalK14Agent Credential Propagation via Shared StateMCP05-privilege-escalationAML.T0054
Pattern "(process\.env|os\.environ|setenv|putenv).*(?:token|credential|api[_\s-]?key|secret|password)" matched in source_code: "process.env.NEYNAR_API_KEY" (at position 1820)
Never write credentials to shared agent state. Use credential vaults (HashiCorp Vault, AWS Secrets Manager) with per-agent scoped access. Implement OAuth token exchange (RFC 8693) for cross-agent authorization. Redact credentials from all agent outputs before writing to shared memory. Required by OWASP ASI03/ASI07 and MAESTRO L7.
criticalQ13MCP Bridge Package Supply Chain AttackMCP10-supply-chainAML.T0054
Pattern "["']@modelcontextprotocol/sdk["']\s*:\s*["'](?:\^|~|\*|latest)" matched in source_code: ""@modelcontextprotocol/sdk": "^" (at position 6297)
MCP bridge packages (mcp-remote, mcp-proxy, @modelcontextprotocol/sdk, fastmcp) are high-value supply chain targets — CVE-2025-6514 (CVSS 9.6) in mcp-remote affected 437,000+ installs. Always pin exact versions (no ^ or ~ ranges). Use lockfiles (package-lock.json, pnpm-lock.yaml, uv.lock). Never run `npx mcp-remote` without version pinning. Verify package integrity with `npm audit` or `pip-audit` before deployment. Reference: CVE-2025-6514, OWASP ASI04.
criticalC1Command InjectionMCP03-command-injectionAML.T0054
Pattern "`[^`]+`" matched in source_code: "`Beyond MCP Server listening on port ${port}`" (at position 5097)
Replace exec()/execSync() with execFile() and pass arguments as an array, never as a string. Validate all inputs against an allowlist before use in any shell context. For subprocess.run, always pass a list and shell=False.
High5
highC7Wildcard CORSMCP07-insecure-config
Pattern "cors\s*\(\s*\)" matched in source_code: "cors()" (at position 3992)
Replace wildcard CORS with an explicit allowlist of permitted origins. Wildcard CORS allows any website to make requests to the MCP server.
highN10Incomplete Handshake Denial of ServiceMCP07-insecure-configAML.T0054
Pattern "(?:createServer|listen)\s*\((?!.*(?:maxConnections|maxClients|connectionLimit|MAX_CONN))" matched in source_code: "listen(" (at position 5058)
Enforce a handshake timeout (recommended: 30 seconds) — terminate connections that do not complete the initialize handshake within the deadline. Limit maximum concurrent pending connections. An attacker can exhaust server connection slots by initiating MCP connections without completing the handshake (Slowloris-style attack). Reference: MCP spec 2025-03-26 lifecycle — initialize MUST complete before functional requests.
highD1Known CVEs in DependenciesMCP08-dependency-vuln
Dependency "@modelcontextprotocol/sdk@1.6.1" has known CVEs:
Update dependencies to versions that patch known CVEs. Run 'npm audit fix' or 'pip-audit' to identify and resolve vulnerable dependencies.
highD1Known CVEs in DependenciesMCP08-dependency-vuln
Dependency "axios@1.8.2" has known CVEs:
Update dependencies to versions that patch known CVEs. Run 'npm audit fix' or 'pip-audit' to identify and resolve vulnerable dependencies.
highL3Dockerfile Base Image Supply Chain RiskMCP10-supply-chainAML.T0017
Pattern "ARG\s+(?:.*(?:PASSWORD|SECRET|TOKEN|API_KEY|PRIVATE_KEY|AWS_ACCESS|DATABASE_URL))" matched in source_code: "Arg && !process.env.NEYNAR_API_KEY" (at position 2911)
Pin base images by digest (FROM node@sha256:abc123...) not mutable tags. Use Docker Content Trust (DCT) or Cosign to verify image signatures. Never pass secrets as build ARGs — use Docker BuildKit secrets or multi-stage builds. Add a USER directive to run as non-root. Scan images with Trivy or Docker Scout before deployment. Remove .env COPY instructions and use runtime environment injection.
Medium1
mediumK17Missing Timeout or Circuit BreakerMCP07-insecure-configAML.T0054
Pattern "(?:query|execute|find|select|aggregate)\s*\((?!.*(?:timeout|maxTimeMS|statement_timeout|deadline|cancel))" matched in source_code: "find(" (at position 2849)
Add timeouts to ALL external calls: HTTP requests (30s), database queries (10s), subprocess execution (60s), and MCP tool calls (30s). Implement circuit breakers that open after N consecutive failures (e.g., opossum, cockatiel). Use AbortSignal for cancellable operations. Required by EU AI Act Art. 15 and OWASP ASI08.
Low1
lowF4MCP Spec Non-ComplianceMCP07-insecure-config
Server fails MCP spec compliance checks: required:server_name; required:server_version; required:protocol_version; recommended:tool_descriptions; recommended:parameter_descriptions
Follow the MCP specification for server metadata. Include server name, version, and protocol version. Provide descriptions for all tools and parameters.