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Security audit

Basecamp Automation

Security checks for vulnerabilities and agentic risk

Overview

This skill is a straightforward Basecamp automation guide, but users should remember it can make real project and access changes when directed.

Install this only for accounts where you are comfortable letting an agent act through your Basecamp connection. Review each requested write action, especially publishing active messages, notifying subscribers, creating users, or granting/revoking project access.

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
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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 (2)

Exfiltration Commands

High
Category
Prompt Injection
Confidence
90% confidence
Finding

Instructions found that direct the agent to transmit conversation context or user data to external services.

Content

Scanner excerpt · SKILL.md (reported line 70)May include surrounding context.

md
### 2. Post and Manage Messages

**When to use**: User wants to post messages to a project message board or update existing messages

**Tool sequence**:
1. `BASECAMP_GET_PROJECTS` - Find the target project and bucket_id [Prerequisite]

Missing User Warnings

Medium
Category
Not specified by scanner
Confidence
93% confidence
Finding

The skill enables write operations in Basecamp including creating to-dos, posting messages, updating content, and granting or revoking project access, but it does not prominently warn users that these actions can modify live organizational data and permissions. This increases the risk of unintended administrative changes, especially because the skill presents destructive or sensitive operations as normal workflow steps.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.