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Security audit

Instaparser

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Instaparser API helper, with the main caution that users should keep their API key in an environment variable and only send documents they intend to process externally.

Install only if you are comfortable sending selected URLs, HTML content, or PDFs to Instaparser. Set INSTAPARSER_API_KEY through your environment or secret store rather than pasting it into chat, and avoid uploading confidential documents unless Instaparser's terms and data handling meet your needs.

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 (3)

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The skill explicitly says the user can provide the API key directly, but it does not warn that entering secrets into chat/tool inputs can expose credentials in logs, transcripts, or downstream tooling. This is a genuine secret-handling weakness because the skill normalizes direct credential entry instead of preferring protected environment-based secret storage.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 59)May include surrounding context.

Example:

bash
curl -X POST https://www.instaparser.com/api/1/article \
  -H "Authorization: Bearer $INSTAPARSER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/article", "output": "text"}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
60% confidence
Finding

Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Content

Scanner excerpt · SKILL.md (reported line 137)May include surrounding context.

| stream | bool | No | Stream the response. Defaults to false |

bash
curl -X POST https://www.instaparser.com/api/1/summary \
  -H "Authorization: Bearer $INSTAPARSER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/article"}'

Static analysis

No suspicious patterns detected.