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Security audit

Frontend Developer

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward frontend career-roadmap API description; it asks for relevant assessment data and references an external API, but it does not include hidden code, persistence, or privilege-seeking behavior.

Only submit career assessment details you are comfortable sending to the referenced external API, and avoid unnecessary persistent identifiers unless the service requires them. Check the provider's privacy and retention terms before using real user data at scale.

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
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
89% confidence
Finding

The skill explicitly asks users to submit session identifiers, timestamps, user IDs, experience history, skills, and career goals, but provides no privacy notice, retention statement, or warning that this data is transmitted to an external service. Even though the data is not highly sensitive by default, it is still personal/profile data and could be misused, retained unexpectedly, or combined for tracking and profiling.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
78% confidence
Finding

The skill references an external API endpoint, meaning user-provided assessment data is likely transmitted off-platform to a third-party service. In context, this becomes more concerning because the transmitted payload includes user/session identifiers and career-profile information, while the skill does not disclose trust boundaries, security guarantees, or privacy handling for that remote service.

Content

Scanner excerpt · SKILL.md (reported line 188)May include surrounding context.

md
## References

- Kong Route: https://api.mkkpro.com/career/frontend-developer
- API Docs: https://api.mkkpro.com:8084/docs