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Security audit

hemnet

Security checks for vulnerabilities and agentic risk

Overview

This skill is a coherent Hemnet real-estate helper that discloses its public data access and does not include hidden code, persistence, or credential use.

Install this if you want an agent to use Hemnet for Swedish real-estate research. Be aware it may be invoked for broad Swedish property requests, so ask explicitly if you want a non-Hemnet source or a general housing answer.

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
  • 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 (1)

Vague Triggers

Medium
Confidence
93% confidence
Finding
The skill advertises broad activation phrases such as Swedish property, Hemnet, bostäder, lägenheter, villor, or slutpriser, which can cause the agent to invoke this skill for loosely related requests. This can lead to unintended tool use, unnecessary external data access, and reduced reliability if the skill is selected when the user did not actually want Hemnet-specific behavior.

Static analysis

No suspicious patterns detected.