web-reader
Read web pages, articles, and document links by converting URLs into Markdown text. Use the `read_url` tool directly, without bash. Sends the full URL to the third-party Jina Reader (r.jina.ai).
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Critical
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tessl review fix ./agent/src/skills/web-reader/SKILL.mdSecurity
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 deliberately forwards full target URLs (including query strings) to an external service (r.jina.ai), which can exfiltrate sensitive tokens/credentials, and documents a bash fallback that bypasses the tool's URL safety guard.
Low
Low-risk findings.
2 low severity findings. Worth noting, but not necessarily harmful.
W011: Third-party content exposure detected (indirect prompt injection risk).
What this means
The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.
Why it was flagged
Yes—this workflow’s `read_url` tool fetches arbitrary public web pages at runtime via the external Jina Reader service (`r.jina.ai`) and returns the page body as Markdown (`content`) into the agent’s context, which is outsider-authored free text.
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's read_url tool forwards the full target URL at runtime to the external Jina Reader service (r.jina.ai), so content fetched from r.jina.ai can directly control the agent's context/prompting.
- Repository
- HKUDS/Vibe-Trading
- Commit
8643fcd
- Audited
- Security analysis
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