canvas
Display and control HTML content on connected Bitterbot nodes (Mac, iOS, Android) via the canvas host server. Use when presenting games, visualizations, dashboards, or interactive demos on a connected device, navigating canvas URLs, capturing canvas snapshots, or debugging canvas connectivity.
71
88%
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Critical
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Security
1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E006: Malicious code pattern detected in skill scripts.
What this means
Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.
Why it was flagged
The skill explicitly allows executing arbitrary JavaScript in remote device canvases, injects a live-reload WebSocket client into served HTML, and can capture screenshots while instructing nodes to load arbitrary (Tailscale/LAN-reachable) URLs—features that enable remote code execution and data exfiltration if abused.
Low
Low-risk findings.
1 low severity finding. Worth noting, but not necessarily harmful.
W012: Unverifiable external dependency detected (runtime URL that controls agent).
What this means
The skill fetches instructions or code from an external URL at runtime, and the fetched content directly controls the agent’s prompts or executes code. This dynamic dependency allows the external source to modify the agent’s behavior without any changes to the skill itself.
Why it was flagged
The skill instructs nodes to load and render remote HTML/JS at runtime (which can execute code) as shown by the example URL http://peters-mac-studio-1.sheep-coho.ts.net:18793/__bitterbot__/canvas/snake.html and the documented WebView/eval behavior, so this external URL is used at runtime to deliver executable content to agents.
- Repository
- Bitterbot-AI/bitterbot-desktop
- Commit
e73c717
- Audited
- Security analysis
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