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.

References

• https://github.com/pipecat-ai/pipecat/commit/3032da53434c5ef01d368654b3551cf21c50dec9
• https://github.com/pipecat-ai/pipecat/commit/88440676996e5e548e1aecea5d565e1c48ccf6fa
• https://github.com/pipecat-ai/pipecat/pull/4660
• https://github.com/pipecat-ai/pipecat/releases/tag/v1.4.0
• https://github.com/pipecat-ai/pipecat/security/advisories/GHSA-j8cv-x86q-rj85