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Security audit

Saks Fifth Avenue API - Designer Sale Prices, Stock, Stores

Security checks for vulnerabilities and agentic risk

Overview

The skill received a benign verdict because the reported external requests fit its apparent API purpose, though the scan is only partially complete and noted a location privacy concern.

The verdict is benign with medium confidence, not a guarantee of safety. Consider whether you are comfortable sharing a ZIP code or coordinates with Scavio for store availability. Skillspector's scan was partial because it could not resolve four local references; AIG completed with no findings.

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
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 (11)

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

Medium
Category
Output Handling
Confidence
93% confidence
Finding

L087 instructs the agent to submit the user's ZIP code or latitude/longitude to the store-availability API, which is hosted by the third-party service Scavio. Although the API host and parameters are documented, the skill does not warn users that their location will be shared with that 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 182)May include surrounding context.

Product

bash
curl -X POST https://api.scavio.dev/api/v1/saks/product \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"product_id": "0400019127312"}'

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 182)May include surrounding context.

Product

bash
curl -X POST https://api.scavio.dev/api/v1/saks/product \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"product_id": "0400019127312"}'

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 267)May include surrounding context.

Search

bash
curl -X POST https://api.scavio.dev/api/v1/saks/search \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query": "coat"}'

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 372)May include surrounding context.

Category

bash
curl -X POST https://api.scavio.dev/api/v1/saks/category \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"path": "/c/women-s-apparel/dresses"}'

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 404)May include surrounding context.

Brand and designers

bash
curl -X POST https://api.scavio.dev/api/v1/saks/designers \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

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 430)May include surrounding context.

Deals (designer sale)

bash
curl -X POST https://api.scavio.dev/api/v1/saks/deals \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "sale"}'

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 575)May include surrounding context.

Suggestions

bash
curl -X POST https://api.scavio.dev/api/v1/saks/suggestions \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query": "gucci"}'

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 471)May include surrounding context.

Store availability

bash
curl -X POST https://api.scavio.dev/api/v1/saks/store-availability \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"sku": "10781654", "zip": "10022"}'

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 517)May include surrounding context.

Stores

bash
curl -X POST https://api.scavio.dev/api/v1/saks/stores \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"zip": "10022"}'

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 616)May include surrounding context.

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

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