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Security audit

LinkedIn Ad Library API - Search Ads and Ad Detail

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward guide for querying a third-party LinkedIn ads API, with its external API use and required key disclosed.

Before installing, users should understand that their LinkedIn ad research queries and Scavio API key are used with Scavio's external service, and that calls consume paid or free account credits.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (5)

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 110)May include surrounding context.

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

# 1. Search ads by keyword, restricted to the US
search = requests.post(f"{BASE}/api/v1/linkedin/ads/search", headers=HEADERS,
    json={"keyword": "ai search", "countries": "US"}).json()
print(search["data"]["total_seen"], "ads seen")
for ad in search["data"]["ads"]:

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 117)May include surrounding context.

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

# 1. Search ads by keyword, restricted to the US
search = requests.post(f"{BASE}/api/v1/linkedin/ads/search", headers=HEADERS,
    json={"keyword": "ai search", "countries": "US"}).json()
print(search["data"]["total_seen"], "ads seen")
for ad in search["data"]["ads"]:

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 122)May include surrounding context.

md
# 3. One ad in full, by an id from search
ad_id = search["data"]["ads"][0]["ad_id"]
detail = requests.post(f"{BASE}/api/v1/linkedin/ads/detail", headers=HEADERS,
    json={"ad_id": ad_id}).json()
d = detail["data"]
print(d["advertiser"], d["paid_for_by"], d["headline"])

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 131)May include surrounding context.

curl:

bash
curl -s https://api.scavio.dev/api/v1/linkedin/ads/search \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"keyword":"ai search","countries":"US"}'

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 131)May include surrounding context.

curl:

bash
curl -s https://api.scavio.dev/api/v1/linkedin/ads/search \
  -H "Authorization: Bearer $SCAVIO_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"keyword":"ai search","countries":"US"}'

Static analysis

Detected: suspicious.exposed_secret_literal

File appears to expose a hardcoded API secret or token.

Critical
Code
suspicious.exposed_secret_literal
Location
SKILL.md:36