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Security audit

Walgreens Product Data API - Prices, Store Stock, Stores

Security checks for vulnerabilities and agentic risk

Overview

The skill provides disclosed Walgreens retail lookups through Scavio, with expected data sharing and API credit costs.

Use this if you are comfortable sharing shopping queries and approximate location with Scavio. Prefer a ZIP code when precise coordinates are unnecessary, protect your API key, and account for credit charges. If enabling MCP, restrict tools to those you need. The complete bundled file was inspected; live API behavior and external SDK/MCP package code were not verified.

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 workflow sends user search terms and location to Scavio without a privacy warning.

Medium
Category
Output Handling
Confidence
90% confidence
Finding

The workflow instructs the agent to submit product queries and the user's ZIP code to the Scavio API. Although the service and endpoints are documented, the skill does not warn users that their search and location data will be disclosed to a third-party provider, potentially including health-related shopping interests.

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 113)May include surrounding context.

Examples

bash
curl -X POST https://api.scavio.dev/api/v1/walgreens/stock \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"product_id": "300452904", "store_ids": ["15350", "15992", "249", "178", "1173"]}'

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 113)May include surrounding context.

Examples

bash
curl -X POST https://api.scavio.dev/api/v1/walgreens/stock \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"product_id": "300452904", "store_ids": ["15350", "15992", "249", "178", "1173"]}'

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 187)May include surrounding context.

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

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