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Security audit

email-finder

Security checks for vulnerabilities and agentic risk

Overview

The verdict is benign with high confidence, though scanners report a mismatch between the stated email-finding purpose and a credit-balance check, plus external API references.

Before installing, verify that the skill’s actual function and the Superagnt API requests match what you want, and understand what your API key and any submitted data may be used for. The scan covered all reported components, but its benign verdict does not mean risk-free; the purpose mismatch remains a reason for caution.

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
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (6)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
93% confidence
Finding

A credit check could support an email-lookup workflow, but the supplied chunk consists entirely of that check and contains none of the declared lookup functionality. Its demonstrated purpose therefore differs materially from the description. There is no evidence of inbox access.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 64)May include surrounding context.

One call proves the key, the credit balance, and this source end to end:

bash
curl -s https://api.superagnt.com/v1/credits \
  -H 'Authorization: Bearer $SUPERAGNT_API_KEY'

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 125)May include surrounding context.

Example

bash
curl -X POST 'https://api.superagnt.com/v1/data/agnt/people/email-finder&; \
  -H 'Authorization: Bearer $SUPERAGNT_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"...": "see tool schemas below"}'

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 74)May include surrounding context.

Base URL

text
https://api.superagnt.com/v1/data/agnt

Available Endpoints

External Transmission

Medium
Category
Data Exfiltration
Confidence
50% 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 140)May include surrounding context.

md
nothing else. The same API key also works with superagnt's other data sources
and platform tools, but those are separate listings that the user installs or
enables themselves; this skill does not add or enable anything beyond what is
documented here. The public catalog is at `https://api.superagnt.com/v1/platforms`.

## Links

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 125)May include surrounding context.

Example

bash
curl -X POST 'https://api.superagnt.com/v1/data/agnt/people/email-finder&; \
  -H 'Authorization: Bearer $SUPERAGNT_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"...": "see tool schemas below"}'