Bonsai Health
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Mar 22, 2026Last Scanned
Findings10
3critical
4high
2medium
1low
0informational
criticalC1Command InjectionMCP03-command-injectionAML.T0054
Pattern "eval\s*\(" matched in source_code: "eval(" (at position 4227)
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.
criticalQ13MCP Bridge Package Supply Chain AttackMCP10-supply-chainAML.T0054
Pattern "(?:mcp|fastmcp|langchain-mcp|llama-index-mcp)(?:>=|~=|==)?(?!\d)" matched in source_code: "MCP" (at position 171)
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.
criticalQ4IDE MCP Configuration InjectionMCP10-supply-chainAML.T0054
Pattern "(?:MCP|Mcp|mCp|mcP)\.(?:JSON|Json|jSon|jsoN)" matched in source_code: "mcp.json" (at position 18423)
MCP servers must NOT write to IDE configuration files (.cursor/mcp.json, .vscode/settings.json, .claude/settings.local.json) without explicit, interactive user confirmation that cannot be bypassed by repository-controlled settings. CVE-2025-54135/54136 (Cursor), CVE-2025-59536 (Claude Code) demonstrated that auto-start and silent config mutation enable RCE. Implement case-normalized path validation (CVE-2025-59944). Never use enableAllProjectMcpServers in shared repositories.
highO10Privacy-Violating TelemetryMCP04-data-exfiltrationAML.T0057
Pattern "(?:analytics|telemetry|tracking|metrics|beacon|pixel|collect)\s*[:=]\s*(?:new|\{|\[)" matched in source_code: "metrics = {" (at position 1844)
Minimize data collection to only what is strictly necessary for tool functionality. Never collect OS fingerprints, hardware IDs, network interface details, or unique device identifiers without explicit user consent. Remove all tracking pixels, analytics beacons, and behavioral profiling code. If telemetry is needed, make it opt-in only, clearly documented, and limited to non-identifying aggregated metrics. Comply with GDPR data minimization (Art. 5(1)(c)) and EU AI Act transparency requirements (Art. 52).
highC7Wildcard CORSMCP07-insecure-config
Pattern "allow_origins\s*=\s*\[\s*['"]\*['"]\s*\]" matched in source_code: "allow_origins=["*"]" (at position 5327)
Replace wildcard CORS with an explicit allowlist of permitted origins. Wildcard CORS allows any website to make requests to the MCP server.
highK18Cross-Trust-Boundary Data Flow in Tool ResponseMCP04-data-exfiltrationAML.T0054
Pattern "(?:readFile|read_file|query|select|getSecret|getCredential|getPassword).*(?:webhook|http|fetch|axios|post|send|email|slack|discord)" matched in source_code: "Query, Request, HTTP" (at position 825)
Implement data flow taint tracking: tag data from sensitive sources (databases, credentials, files) and prevent it from flowing to external sinks (HTTP, webhooks, email) without explicit sanitization/redaction. Apply data classification and enforce boundary controls per trust level. Required by ISO 27001 A.5.14 and CoSAI MCP-T5.
highD1Known CVEs in DependenciesMCP08-dependency-vuln
Dependency "uvicorn@null" has known CVEs:
Update dependencies to versions that patch known CVEs. Run 'npm audit fix' or 'pip-audit' to identify and resolve vulnerable dependencies.
mediumK20Insufficient Audit Context in LoggingMCP09-logging-monitoringAML.T0054
Pattern "logger\.(info|warn|error)\s*\(.*(?:tool|request|handle|invoke)(?!.*(?:requestId|correlationId|traceId|spanId|agent[_\s-]?id|user[_\s-]?id))" matched in source_code: "logger.info("lazy_init", msg="Initializing retrieval and agents on first request" (at position 4110)
Use structured logging that includes all five ISO 27001 A.8.15 fields: (1) WHO — agent/user identity, (2) WHAT — tool name and operation, (3) WHEN — ISO 8601 timestamp, (4) WHERE — server ID and correlation ID, (5) OUTCOME — success/failure and result summary. Replace console.log with structured loggers (pino, winston). Add correlation IDs for request tracing across multi-agent chains.
mediumK17Missing Timeout or Circuit BreakerMCP07-insecure-configAML.T0054
Pattern "(?:fetch|axios|got|request|urllib|httpx|http\.get|http\.post)\s*\((?!.*(?:timeout|signal|AbortSignal|deadline|cancel))" matched in source_code: "Request(" (at position 5499)
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.
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.
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Security Category Deep Dive
Sub-Category Tree · Remediation Roadmap · Attack Stories · Compliance Overlay · ATLAS Techniques · Maturity Model
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