vibecheck
HIGHAI Agent Injection

MCP server config executing shell commands on startup

MCP (Model Context Protocol) server configurations that run shell commands on startup can be used to establish persistence or exfiltrate data the moment a developer opens their AI coding environment. A malicious .mcp.json committed to a repo triggers automatically.

HOW VIBECHECK DETECTS THIS

vibecheck clones your repository and runs Gitleaks, Semgrep, njsscan, and a suite of custom checks targeting patterns common in AI-generated code. This check is part of the AI Agent Injection category. When a matching pattern is found, Claude triages the finding and produces a plain-English explanation and a concrete fix — no security expertise required.

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MORE IN AI AGENT INJECTION

"Ignore previous instructions" in CLAUDE.md / README / AGENTS.mdCRITICALHidden instructions in HTML commentsHIGHUnicode direction-override characters hiding textHIGHMCP server connecting to a remote endpointMEDIUM
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