GHSA-m3wp-48jr-vr4g: mistral.rs: Unbounded Remote Media Fetch and Video Frame Expansion DoS

## Unbounded Remote Media Fetch and Video Frame Expansion DoS ### Summary The `POST /v1/chat/completions` endpoint in mistral.rs fetches attacker-supplied media URLs (image, audio, video) into server memory with no byte limit, and extracts every frame of a supplied video when `num_frames` is `None`. An unauthenticated remote attacker can exhaust server memory, disk space, and CPU by pointing the endpoint at an infinite-streaming HTTP server or a long high-framerate video, causing a complete denial of service. No credentials or special configuration are required; the route is open by default. …