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Security audit

Willhaben Real Estate Search

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed willhaben.at real estate search helper with expected outbound requests and no evidence of hidden access, persistence, or destructive behavior.

Install only if you want an agent to run local Python searches against willhaben.at. For broad Austrian property questions, confirm that the agent should use willhaben.at before sending query details externally.

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
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (2)

Lp3

Medium
Category
MCP Least Privilege
Confidence
93% confidence
Finding
The skill documents and requires network-capable behavior via Python requests to external willhaben API endpoints, but it does not declare any explicit tool scope or permissions boundary. This can lead to over-broad execution in hosts that rely on manifest-level restrictions, making unintended outbound network access harder to audit or constrain.

Vague Triggers

Medium
Confidence
91% confidence
Finding
The trigger list includes broad phrases such as 'Austrian real estate' and generic property-search wording, which may cause the skill to activate in contexts where the user did not specifically intend to use this integration. Unintended invocation can expose user queries to unnecessary external network requests or produce irrelevant results.

Static analysis

No suspicious patterns detected.