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Security audit

Poyo Gpt 5 6

Security checks for vulnerabilities and agentic risk

Overview

This skill is a clearly disclosed PoYo API helper that sends user-prepared GPT-5.6 requests to a fixed external endpoint using a server-side API key.

Install only if you intend to send prompts or JSON payloads to PoYo's API. Keep POYO_API_KEY server-side, do not place it in browser code or logs, and review payload files before using the submit script because their contents will be sent to PoYo.

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
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (11)

Credential Access

High
Category
Privilege Escalation
Confidence
70% confidence
Finding

Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.

Content

Scanner excerpt · references/api.md (reported line 18)May include surrounding context.

Content-Type: application/json

text

Get API keys from <https://poyo.ai/dashboard/api-key>.

Recommended skill env var:

Undeclared Tool Scope

Medium
Category
MCP Least Privilege
Confidence
89% confidence
Finding

The skill advertises shell-capable execution via required curl, but it does not declare an explicit tool scope such as permissions or allowed-tools. That mismatch can cause an agent runtime to grant broader execution than reviewers expect, increasing the chance of unintended command execution or network use when the skill is invoked.

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 · references/api.md (reported line 54)May include surrounding context.

Basic Text Example

bash
curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer YOUR_API_KEY" \
  --header "Content-Type: application/json" \

External Transmission

Medium
Category
Data Exfiltration
Confidence
70% 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 · scripts/submit_gpt_5_6_responses.sh (reported line 11)May include surrounding context.

sh
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
95% confidence
Finding

This code file performs a network POST request to an external service and sends the contents of the user-supplied JSON file, but it provides no confirmation prompt, warning message, or explanatory comment about that transmission. Because the payload may contain user or system data, the lack of disclosure makes the data transfer non-obvious to users running the script.

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 3)May include surrounding context.

md
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"

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 · references/api.md (reported line 5)May include surrounding context.

md
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"

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 · references/api.md (reported line 55)May include surrounding context.

md
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"

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 · references/api.md (reported line 70)May include surrounding context.

md
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"

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 · references/api.md (reported line 98)May include surrounding context.

md
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"

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 · scripts/submit_gpt_5_6_responses.sh (reported line 12)May include surrounding context.

sh
: "${POYO_API_KEY:?POYO_API_KEY is required}"

curl --fail-with-body --request POST \
  --url "https://api.poyo.ai/v1/responses" \
  --header "Authorization: Bearer ${POYO_API_KEY}" \
  --header "Content-Type: application/json" \
  --data @"$1"