tweetsave_get_thread

2 findings on this tool

1. mediumunconstrained inputf-r1-tweetsave_get_thread

   Tool `tweetsave_get_thread` accepts unconstrained string input

   The following string parameter(s) have no `maxLength` constraint: `response_format`, `url`. Unbounded strings let an attacker stuff arbitrary payloads through the tool, including indirect-injection content.

   fix: Add a `maxLength` to each string property, or constrain with an `enum` or `pattern`. Most legitimate tool inputs fit under a few hundred bytes.

   OWASP LLM01NIST MEASURE-2.3ATLAS T0051
2. mediumindirect injectionf-r6-tweetsave_get_thread

   Tool `tweetsave_get_thread` fetches external web content -- indirect-injection surface

   Description: "Fetch a tweet thread (multiple connected tweets by the same author). Note: Current implementation fetches the main tweet. Full thread crawling requires additional API access. Args: - url (string): URL or ID of any tweet in the thread - response_format ('markdown' | 'json'): Output format (default: 'markdown') Returns: Array of tweets in the thread with all content and media. Examples: - "Get the full thread from this tweet: https://x.com/user/status/123"" -- this tool pulls externally-controlled content into the agent's context window, the canonical indirect-injection vector. Even when the user supplies the URL, content at that URL can carry hostile instructions.

   fix: Sandbox the fetched content: strip prompts before forwarding to the model, constrain to an allow-list of domains, and route through capframe-guard with a `domain in [...]` caveat.

   OWASP LLM01NIST MEASURE-2.3ATLAS T0051