tweetsave_get_tweet

2 findings on this tool

1. mediumunconstrained inputf-r1-tweetsave_get_tweet

   Tool `tweetsave_get_tweet` 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_tweet

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

   Description: "Fetch a single tweet with all its content including text, media (photos, videos, GIFs), polls, and engagement metrics. This tool retrieves tweet data from Twitter/X using the FxTwitter API. It returns the tweet content, author info, media URLs, and engagement stats. Args: - url (string): Tweet URL or tweet ID - response_format ('markdown' | 'json'): Output format (default: 'markdown') Returns: Tweet data including: - Author info (name, username, avatar) - Tweet text - Media URLs (photos, videos) - Engagement (likes, retweets, replies, views) - Poll data (if applicable) - Quote tweet (if applicable) Examples: - "Get tweet from https://x.com/elonmusk/status/123456" - "Fetch this tweet: 123456789" Note: Does not fetch replies. Use tweetsave_to_blog for a complete blog post with formatting." -- 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