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Security audit

Google Search API - Organic SERP, Knowledge Graph, PAA, AI Overview

Security checks for vulnerabilities and agentic risk

Overview

This skill provides a clearly disclosed Scavio search integration, with ordinary privacy, billing, and API-key precautions.

Scavio receives your searches and any location you supply, so omit confidential information. Requests consume credits. Store the key in an environment variable or secret store, prefer Authorization headers, and redact keys from URLs and diagnostics.

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 (6)

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 57)May include surrounding context.

Endpoint

text
POST https://api.scavio.dev/api/v2/google
Authorization: Bearer $SCAVIO_API_KEY

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 104)May include surrounding context.

md
API_KEY = "sk_your_key_here"

response = requests.post(
    "https://api.scavio.dev/api/v2/google",
    headers={"Authorization": f"Bearer {API_KEY}"},
    json={"query": "langchain agents tutorial", "gl": "us", "hl": "en"},
)

The workflow sends user queries to Scavio without a privacy warning.

Medium
Category
Output Handling
Confidence
92% confidence
Finding

The workflow instructs the agent to send the user's query and optional location to the third-party Scavio endpoint identified at L057. Although the service is named, the skill does not warn that sensitive information in queries or location parameters will leave the user's environment.

Content

No source excerpt is available for this finding.

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 103)May include surrounding context.

md
# store in real code - keep it out of source control.
API_KEY = "sk_your_key_here"

response = requests.post(
    "https://api.scavio.dev/api/v2/google",
    headers={"Authorization": f"Bearer {API_KEY}"},
    json={"query": "langchain agents tutorial", "gl": "us", "hl": "en"},

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 103)May include surrounding context.

md
# store in real code - keep it out of source control.
API_KEY = "sk_your_key_here"

response = requests.post(
    "https://api.scavio.dev/api/v2/google",
    headers={"Authorization": f"Bearer {API_KEY}"},
    json={"query": "langchain agents tutorial", "gl": "us", "hl": "en"},

External Transmission

Medium
Category
Data Exfiltration
Confidence
92% confidence
Finding

The legitimate compatibility endpoint is not itself suspicious, but the example places the API key in the URL query string. If copied into real use, the credential can be retained in URL logs, monitoring traces, or copied diagnostics, potentially allowing someone with access to those records to consume the account's credits; HTTPS does not prevent this endpoint-side logging exposure.

Content

Scanner excerpt · SKILL.md (reported line 146)May include surrounding context.

When the user has existing Custom Search JSON API code (googleapis.com/customsearch/v1, cse().list(...), a cx engine id, parsing items[]), do not rewrite it to the call above. Scavio answers the same request at Google's own path, so the migration is a host and key swap:

text
GET https://api.scavio.dev/customsearch/v1?key=%2A%2A%2A&cx=anything&q=coffee
  • Same parameters (q, num 1-10, start 1-based, gl, hl, lr, cr, safe, dateRestrict, siteSearch, siteSearchFilter, exactTerms, excludeTerms, orTerms, hq, fileType) and the same customsearch#search response: items[].title/link/snippet/displayLink/htmlTitle/htmlSnippet, searchInformation.totalResults (a string) and queries.nextPage.

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:37