Security audit

FinerWorks

Security checks for vulnerabilities and agentic risk

Overview

The FinerWorks skill is mostly coherent, but its setup instructions tell users to run an unverified internet-downloaded installer directly in a shell.

Review the installer path before using this skill. Prefer installing the oo CLI from verified official release documentation or a signed/package-manager route, and avoid running the provided pipe-to-shell commands unless you are comfortable trusting the remote installer endpoint. The listed FinerWorks connector actions themselves are read-focused.

A.I.G

Vulnerability Patterns

Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
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
Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

Findings (1)

T03 · Remote Payload Retrieval and Execution

Error

Location: SKILL.md:58
Finding: Unverified Remote Installer Download and Immediate Execution
Content: View full analysis
Remediation: View remediation
/install.sh" echo " oo-install.sh" | sha256sum --check less oo-install.sh bash oo-install.sh ``` 9. For PowerShell, use an Authenticode-signed, versioned script or package, verify the signature with `Get-AuthenticodeSignature`, and execute it only after validation. ]]>

SkillSpector

Vulnerability Patterns

Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access

Findings (2)

External Script Fetching

High

Category: Supply Chain
Confidence: 98% confidence
Finding: The skill instructs the agent to install software by piping a remotely fetched script directly into a shell (curl ... | bash), which is a classic supply-chain and remote code execution risk. If the install endpoint, transport, publisher account, or distribution pipeline is compromised, arbitrary code would execute immediately on the host with the user's privileges.
Content: Scanner excerpt · SKILL.md (reported line 58)May include surrounding context.

oo: command not found — install the oo CLI (other platforms: https://cli.oomol.com/install-guide.md):

bash
curl -fsSL https://cli.oomol.com/install.sh | bash # macOS / Linux

powershell

Vague Triggers

Medium

Category: Not specified by scanner
Confidence: 96% confidence
Finding: The description says to use this skill for "ANY FinerWorks request," which is a broad activation condition without explicit scope boundaries or negative examples. While tied to a domain, the instruction is still ambiguous about what counts as a FinerWorks-related task and could cause over-invocation for loosely related mentions.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.