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Security audit

Canadian Tire API - Store Prices, Stock, Clearance, Deals

Security checks for vulnerabilities and agentic risk

Overview

The skill provides Canadian Tire product lookups through Scavio, with expected API-key use, location sharing, and usage charges.

Scavio receives your searches and any location supplied for store lookup. Prefer a postal-code prefix or an already-known store ID when sufficient. Keep the API key in an environment variable or secret store, and consider the disclosed per-request credit cost. Review external packages separately if using the optional SDK or MCP setup, and restrict MCP platforms to those you need.

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
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (4)

The store-selection workflow sends the user's location to Scavio without a privacy warning.

Medium
Category
Output Handling
Confidence
95% confidence
Finding

The workflow instructs the agent to call the stores endpoint with the user's postal code or latitude and longitude. Although the file identifies Scavio as the API provider, it does not warn that user location data will be transmitted to this third-party service.

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 138)May include surrounding context.

Examples

bash
curl -X POST https://api.scavio.dev/api/v1/canadiantire/availability \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"store_id": "600", "skus": ["0547273", "0438858"]}'

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 138)May include surrounding context.

Examples

bash
curl -X POST https://api.scavio.dev/api/v1/canadiantire/availability \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"store_id": "600", "skus": ["0547273", "0438858"]}'

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 · SKILL.md (reported line 223)May include surrounding context.

md
HEADERS = {"Authorization": f"Bearer {API_KEY}"}

def ct(endpoint, body):
    r = requests.post(f"{BASE}/api/v1/canadiantire/{endpoint}", headers=HEADERS, json=body, timeout=120)
    r.raise_for_status()
    return r.json()["data"]