CVE-2026-54695
Description
Pipecat is an open-source Python framework for building real-time voice and multimodal conversational agents. Prior to 1.4.0, the pipecat development runner registers a /ws WebSocket endpoint for telephony testing that accepts connections without authentication, reads an attacker-supplied callSid from a Twilio stream-start handshake in src/pipecat/runner/utils.py, and passes it to TwilioFrameSerializer so the server can issue an authenticated Twilio REST API hang-up request with the server operator's credentials; equivalent unauthenticated call-control sinks exist for Telnyx and Plivo. This issue is fixed in version 1.4.0.
How to fix
- pipecat pipecat1.4.0 or later
- pipecat-ai1.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pipecat pipecat | v < 1.4.0 | 1.4.0 |
| pipecat-aiPyPI | 0.0.77 ≤ v < 1.4.0 | 1.4.0 |
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Attack Surface Management
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