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Security audit

51job

Security checks for vulnerabilities and agentic risk

Overview

This skill is a narrow 51job helper for summarizing public job and company pages, with no code execution, persistence, login automation, or destructive behavior found.

Before installing, expect the skill to help browse and summarize public 51job listings or company pages. Use it for explicit 51job research tasks, and avoid using it for logged-in account actions, job applications, or large-scale scraping because the skill itself says those are out of scope.

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
91% confidence
Finding
The invocation description is broad enough to trigger on many ordinary requests involving 51job content, which can cause the skill to be selected outside narrowly intended use cases. Over-broad routing increases the chance of unnecessary web access or automation behavior being invoked when a simpler, safer response would suffice.

Static analysis

No suspicious patterns detected.