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OpenAdvisories
High · 7.5 CVE-2026-54695 EUVD-2026-42673GHSA-j8cv-x86q-rj85PYSEC-2026-2878

Pipecat: Telephony WebSocket `/ws` Unauthenticated Call-Control Abuse via Attacker-Supplied Call SID

Published Jul 9, 2026 · Updated Jul 10, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
pipecat-ai pipecat < 1.4.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI pipecat-ai >= 0.0.77, < 1.4.0 1.4.0 GHSA-j8cv-x86q-rj85

References