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Security audit

Freelancer Auto Bidder

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Freelancer.com project-search and bid-drafting helper with disclosed local bid logging.

Before installing, be aware that the skill may search Freelancer.com or the web, use the freelance profile details you provide, draft proposals, and update a local bids.md log. Review proposal text and any log entry before using it for real bids.

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
  • 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 (2)

Vague Triggers

Medium
Confidence
93% confidence
Finding
The skill description is broad enough to activate on generic job-finding or proposal-writing requests, not just Freelancer.com-specific tasks. That can cause inappropriate routing into a skill that performs external searching and proposal drafting when the user may have intended a narrower or different workflow, increasing the chance of unintended actions or data handling.

Missing User Warnings

Medium
Confidence
96% confidence
Finding
The skill directs the agent to maintain and update a local `bids.md` file without clearly disclosing that it will write to the workspace or requiring consent. Silent file modification can surprise users, overwrite existing content, or persist sensitive client/project history locally in ways the user did not intend.

Static analysis

No suspicious patterns detected.