Back to skill

Security audit

Evolution Api Go - Evo Go

Security checks for vulnerabilities and agentic risk

Overview

The skill is a coherent WhatsApp automation reference, but it exposes high-impact admin, messaging, contact, and profile operations with limited guardrails.

Install only if you intend to give the agent real WhatsApp automation authority. Use separate test and production instances, keep the global admin key tightly scoped, require human confirmation before deleting instances or changing profile/privacy/group settings, and only send broadcasts to recipients who have opted in.

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
  • Tool MisuseTool Parameter Abuse, Chaining Abuse, Unsafe Defaults
  • 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)

Tool Parameter Abuse

High
Category
Tool Misuse
Confidence
84% confidence
Finding

The documented delete-instance operation is a destructive admin action exposed without any cautionary guidance, confirmation requirements, or scope restrictions. If an agent is allowed to invoke this skill from natural-language instructions, this endpoint could be abused to delete production messaging instances, causing service disruption and loss of connectivity.

Content

Scanner excerpt · SKILL.md (reported line 166)May include surrounding context.

Delete Instance

bash
DELETE /instance/delete/{instance}
Header: apikey: $EVOGO_GLOBAL_KEY

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 40)May include surrounding context.

bash
# Create instance
curl -X POST "$EVOGO_API_URL/instance/create" \
  -H "apikey: $EVOGO_GLOBAL_KEY" \
  -H "Content-Type: application/json" \
  -d '{

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
90% confidence
Finding

The examples expose contact lookup, avatar retrieval, contacts listing, privacy settings, block lists, and profile updates without warning that these operations handle personal data. This can normalize collection or manipulation of sensitive user metadata without instructing agents to minimize data access, obtain authorization, or protect returned data.

Content

No source excerpt is available for this finding.

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
94% confidence
Finding

The skill includes a turnkey broadcast workflow for sending messages to multiple contacts without any warning about consent, anti-spam controls, or privacy obligations. In a WhatsApp automation context, this materially increases the likelihood of misuse for unsolicited outreach, harassment, or policy-violating mass messaging.

Content

No source excerpt is available for this finding.

External Transmission

Medium
Category
Data Exfiltration
Confidence
81% confidence
Finding

This example operationalizes repeated outbound transmission to multiple recipients in a simple loop, effectively providing a bulk-messaging pattern. In the context of WhatsApp automation, that makes unsolicited outreach and spam easier, especially since the example omits recipient-consent checks and policy warnings.

Content

Scanner excerpt · SKILL.md (reported line 869)May include surrounding context.

Broadcast Message to Multiple Contacts

bash
for number in 5511999999999 5511888888888 5511777777777; do
  curl -X POST "$EVOGO_API_URL/send/text" \
    -H "apikey: $EVOGO_API_KEY" \
    -H "Content-Type: application/json" \
    -d "{

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 906)May include surrounding context.

md
}' | jq -r '.groupJid')

# 2. Send welcome message
curl -X POST "$EVOGO_API_URL/send/text" \
  -H "apikey: $EVOGO_API_KEY" \
  -H "Content-Type: application/json" \
  -d "{

Static analysis

No suspicious patterns detected.