T09 · Insecure Skill Coding Practices
Error
- Location
index.js:9- Finding
Node secrets can be transmitted to arbitrary hosts over plaintext HTTP
- Content
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- Remediation
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Security audit
A2a Secret Manager
Security checks for vulnerabilities and agentic risk
Overview
This skill is for managing EvoMap node credentials, but it can rotate, transmit, save, and print secrets in ways users should review carefully before installing.
Install only if you trust the EvoMap endpoint configuration and understand that this skill handles live node credentials. Use HTTPS-only hub URLs, avoid untrusted EVOMAP_HUB_URL values, do not run rotation in logged CI or shared terminals, and secure any saved secret files with owner-only permissions. Review whether automatic rotation and disk writes are acceptable for your environment.
Vulnerability Patterns
- Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
- 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
Findings (3)
T09 · Insecure Skill Coding Practices
Warning
- Location
index.js:100- Finding
Stored node secrets may be created with insufficient filesystem permissions
- Content
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- Remediation
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T09 · Insecure Skill Coding Practices
Warning
- Location
index.js:166- Finding
Rotated node secrets are exposed through API results and command-line output
- Content
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- Remediation
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Vulnerability Patterns
- Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
- MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
- Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
- Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
- Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)
Undeclared Tool Scope
Medium
- Category
- MCP Least Privilege
- Confidence
- 88% confidence
- Finding
The skill documents access to environment variables and operational secret management behavior, but it does not declare any explicit tool scope or permissions boundary. In an agent setting, missing scope declarations can cause the runtime or user to underestimate the skill's ability to read sensitive values and manipulate authentication state, increasing the risk of unintended secret exposure or misuse.
- Content
Missing User Warnings
Medium
- Category
- Not specified by scanner
- Confidence
- 95% confidence
- Finding
The skill describes rotating secrets and saving new credentials to disk, including custom storage paths, without any warning about overwriting credential files, changing authentication state, or handling the returned newSecret safely. This is dangerous because users or calling agents may trigger credential changes that persist locally, potentially breaking connectivity, exposing secrets in logs or outputs, or writing sensitive data to insecure locations.
- Content