Incident2026-10-20

Meta suspended Muse’s chat-sharing feature. Researchers found shared conversations were exposed via public DNS records. They accessed 6,800 links containing private details. Exposed data included business documents and personal information. The issue stemmed from predictable subdomains based on conversation titles. Meta paused the feature to review the vulnerability. Claroc researchers confirmed links became inaccessible after the update. Meta has not announced a fix timeline.

What changed

Shared Muse conversations were accessible via predictable URLs.

What it unlocks

Preventing unauthorized access to shared conversations via passive DNS searches.

  • 6,800 shared conversations exposed

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