First Seen
Feb 18, 2026
Last Scanned
Feb 22, 2026
Findings
2
Score
70/100
Findings (2)
Detects fetching external URLs and using the content as agent instructions or rules
instructions "<what to do>" --url Sanitize or validate all external inputs (file contents, API responses, user messages) before including them in prompts or tool calls. Implement input/output boundaries between trusted and untrusted data.
Likely FP if the matched text is the skill's own instruction set describing how to handle user input, not an actual injection payload.
Detects instruction override text in tool response content fields
store the instruction Prevent MCP tools from modifying other tool definitions, system prompts, or agent configuration. Implement integrity checks on tool registration and block runtime tool modification.
Likely FP if the match is documentation about tool management features rather than a tool that actually tampers with other tools at runtime.