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Security audit

Claw ESP Expert

Security checks for vulnerabilities and agentic risk

Overview

This ESP-IDF helper is a disclosed developer tool that reads project files, runs ESP-IDF build/flash diagnostics when invoked, and makes patch or dependency suggestions rather than silently changing files.

Install this as a developer diagnostic skill only if you are comfortable with it reading ESP-IDF project files, running idf.py build or flash/monitor when you invoke those tools, contacting the official Espressif component registry for component lookup, and showing generated dependency or shell-command suggestions for you to review before use.

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs
Vulnerability Patterns
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (86)

Tp4

High
Category
MCP Tool Poisoning
Confidence
92% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
93% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
97% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
96% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
95% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Tp4

High
Category
MCP Tool Poisoning
Confidence
94% confidence
Finding

Accessing the Espressif Component Registry API and generating dependency snippets/add-dependency commands expands the skill from local diagnostics into networked supply-chain assistance. That is more security-sensitive than the short description suggests because it can steer dependency choices and requires outbound connectivity.

Content

No source excerpt is available for this finding.

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 33)May include surrounding context.

md
These tools are implemented in the bundled runtime and are invoked through `scripts/run-tool.mjs`.

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 55)May include surrounding context.

md
These tools are implemented in the bundled runtime and are invoked through `scripts/run-tool.mjs`.

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 68)May include surrounding context.

md
These tools are implemented in the bundled runtime and are invoked through `scripts/run-tool.mjs`.

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 81)May include surrounding context.

md
These tools are implemented in the bundled runtime and are invoked through `scripts/run-tool.mjs`.

Ae1

High
Category
analysis-evasion
Confidence
100% confidence
Finding

Referenced artifact was not completely inspected

Content

Scanner excerpt · SKILL.md (reported line 95)May include surrounding context.

md
These tools are implemented in the bundled runtime and are invoked through `scripts/run-tool.mjs`.

Static analysis

No suspicious patterns detected.