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Security audit

babbleBrush

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed API guide for using BabbleBrush image editing, with sensitive but purpose-aligned account, image, and provider-key operations.

Install only if you are comfortable giving BabbleBrush access to the images you manage through it and, if using BYOK, storing provider API keys with the service. Use dedicated provider keys where possible, monitor provider billing, and confirm exact canvas details before any delete operation.

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 (3)

External Transmission

Medium
Category
Data Exfiltration
Content
### Get current user

```bash
curl -H "Authorization: Bearer $BABBLEBRUSH_API_KEY" \
  "https://babblebrush.com/api/v1/me"
```
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Missing User Warnings

Medium
Confidence
88% confidence
Finding
The skill instructs users or agents to transmit third-party provider API keys to the babblebrush service without a prominent warning about the sensitivity of those credentials, scope minimization, or trust implications. This can lead users to hand over reusable secrets to an external platform without understanding that compromise or misuse could expose billing, data access, or downstream provider resources.

Missing User Warnings

Medium
Confidence
93% confidence
Finding
The skill documents a destructive DELETE canvas operation but provides no guidance to require explicit user confirmation before invoking it. In an agent setting, that omission is risky because an autonomous or semi-autonomous assistant may delete user image history or work-in-progress irreversibly based on ambiguous instructions or prompt confusion.

Static analysis

No suspicious patterns detected.