Security audit

Jiminny

Security checks for vulnerabilities and agentic risk

Overview

The skill is mostly a coherent read-only Jiminny connector, but its first-time setup tells users to execute unverified remote installer scripts directly.

Review before installing. Normal Jiminny reads through the oo CLI are purpose-aligned, but do not run the provided installer one-liners unless you trust OOMOL's installer source and delivery path; prefer an independently verified or signed installation method for the oo CLI.

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 (2)

T03 · Remote Payload Retrieval and Execution

Error

Location: SKILL.md:70
Finding: Remote Shell Script Downloaded and Executed Without Integrity Verification
Content: View full analysis
Remediation: View remediation

T03 · Remote Payload Retrieval and Execution

Error

Location: SKILL.md:74
Finding: Remote PowerShell Installer Executed Through Invoke-Expression
Content: View full analysis
Remediation: View remediation

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: 95% confidence
Finding: The skill instructs users to install software via curl ... | bash, which executes remote script content directly from the network without prior verification or integrity checking. If the install endpoint, transport, DNS, or upstream distribution is compromised, arbitrary code could run on the user's machine with the user's privileges.
Content: Scanner excerpt · SKILL.md (reported line 70)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: 94% confidence
Finding: The manifest description uses an expansive activation condition: "Use this skill for ANY Jiminny request." That wording is broad and does not provide exclusions or concrete trigger constraints, increasing the chance of unintended invocation whenever Jiminny is merely mentioned.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.