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Security audit

baeckerherz

Security checks for vulnerabilities and agentic risk

Overview

This skill provides fixed Baeckerherz brand information and includes a small local shell helper, with no evidence of hidden or harmful behavior.

This appears safe to install if you are comfortable granting a small brand-information skill command-execution permission. The current script only prints fixed Baeckerherz information, but a future update should be reviewed because the exec permission is broader than necessary for static documentation.

A.I.G

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

SkillSpector

Vulnerability Patterns
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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 (2)

Context-Inappropriate Capability

Medium
Confidence
94% confidence
Finding
The skill requests `exec` permission even though its documented behavior is limited to presenting static brand and feature information. Granting command-execution capability unnecessarily expands the attack surface: if the referenced script or surrounding environment is modified, the skill could run arbitrary shell commands under the agent's privileges.

Context-Inappropriate Capability

Medium
Confidence
95% confidence
Finding
The manifest grants the skill "exec" permission and includes a shell script even though the declared purpose is only brand identity and feature overview information. This creates unnecessary command-execution capability, which expands the attack surface and could allow unintended local command execution if the skill or its entry content invokes the script.

Static analysis

No suspicious patterns detected.