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Security audit

Klipfolio

Security checks for vulnerabilities and agentic risk

Overview

The Klipfolio reads match the stated purpose, but automatic setup runs unverified remote installers without a separate user decision.

Review and approve CLI setup separately before allowing the agent to execute it. Verify the installer, use a Klipfolio connection limited to needed reads, and consider disabling the CLI's skill synchronization. Remote installer effects remain unverified; the artifact does not establish malicious behavior.

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
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Output HandlingUnvalidated Output Injection, Cross-Context Output, Unbounded Output
  • MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Findings (4)

Description-Behavior Mismatch

High
Category
MCP Tool Poisoning
Confidence
98% confidence
Finding

The declared purpose describes Klipfolio data access, but the supplied code runs a remote installer from a different service. No visible evidence connects this installation to the declared functionality, so it is an undeclared capability rather than an established supporting implementation detail. The downloaded script's contents and further effects are not available for assessment.

Content

No source excerpt is available for this finding.

External Script Fetching

High
Category
Supply Chain
Confidence
98% confidence
Finding

The curl-to-bash pipeline immediately executes whatever script the remote endpoint supplies, without a pinned version or independent integrity verification. A compromised installer host or distribution pipeline could execute arbitrary code with the agent process's permissions, potentially exposing local files and credentials; the PowerShell example has the same weakness.

Content

Scanner excerpt · SKILL.md (reported line 62)May include surrounding context.

The setup workflow executes downloaded installation scripts without warning about running remote code or modifying the local system.

Medium
Category
Output Handling
Confidence
94% confidence
Finding

When the CLI is missing, the skill directs installation without explaining that it executes remote code and modifies the local environment, or requiring explicit approval. The missing-command condition limits exposure, and strict enforcement of the declared Bash(oo *) restriction should block these installer commands, but neither makes this a safe setup instruction.

Content

No source excerpt is available for this finding.

Autonomous Decision Making

Medium
Category
Excessive Agency
Confidence
80% confidence
Finding

Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.

Content

Scanner excerpt · SKILL.md (reported line 83)May include surrounding context.

md
- **`OOMOL_INSUFFICIENT_CREDIT`** — OOMOL billing stop. Recharge at `https://console.oomol.com/billing/token-recharge` before retrying.

- **HTTP 402 without `OOMOL_INSUFFICIENT_CREDIT`** — the third-party account itself has no active plan or credit. Report the provider error message as is; do not ask the user to recharge OOMOL.

## Resources