Security audit

UXC

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed UXC helper for calling remote APIs, with normal integration risks around installing the CLI, sending data to chosen endpoints, and storing credentials.

Before installing, prefer a trusted package manager or pinned release for UXC. Use this skill only with endpoints you trust, keep payloads minimal, avoid sending secrets or local context unless required, verify credential bindings before live calls, and start with read-only operations before any mutation.

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

Warning

Location: SKILL.md:29
Finding: Mutable Remote Installer Is Downloaded and Executed Without Integrity Verification
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
MCP Tool PoisoningHidden Instructions, Unicode Deception, Parameter Description Injection
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code

Findings (2)

Tp4

High

Category: MCP Tool Poisoning
Confidence: 98% confidence
Finding: The declared description describes an operational integration skill for discovering and calling remote APIs through UXC. The actual code chunk only validates repository documentation and metadata using shell checks and ripgrep. Its primary purpose is static linting/validation of skill packaging and docs, not API discovery or execution. There is no network access, no invocation of UXC against remote hosts, and no protocol-specific handling beyond checking that certain documentation text exists. This is a material description-behavior mismatch.
Content: No source excerpt is available for this finding.

Missing User Warnings

Medium

Category: Not specified by scanner
Confidence: 90% confidence
Finding: The skill instructs agents to call remote hosts and send structured input, but it does not prominently warn that user data, secrets, prompts, or local context may be transmitted to external endpoints. In an agent setting, this can lead to unintended data exfiltration or privacy violations if sensitive content is passed through the tool without explicit user awareness or consent.
Content: No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.