browserbase-sessions

clawhub:browserbase-sessions

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C
70/100

First Seen

Feb 18, 2026

Last Scanned

Feb 22, 2026

Findings

2

Score

70/100

HIGH 2

Findings (2)

HIGH
Fetch URL and use as instructions
L36

Detects fetching external URLs and using the content as agent instructions or rules

instructions "<what to do>" --url
FIX

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.

FP?

Likely FP if the matched text is the skill's own instruction set describing how to handle user input, not an actual injection payload.

HIGH
Prompt cache poisoning
L408

Detects instruction override text in tool response content fields

store the instruction
FIX

Prevent MCP tools from modifying other tool definitions, system prompts, or agent configuration. Implement integrity checks on tool registration and block runtime tool modification.

FP?

Likely FP if the match is documentation about tool management features rather than a tool that actually tampers with other tools at runtime.