pipecat-ai pipecat up to 1.3.x WebSocket Endpoint utils.py callSid input validation

Summaryinfo

A vulnerability was found in pipecat-ai pipecat up to 1.3.x. It has been rated as critical. This issue affects some unknown processing of the file src/pipecat/runner/utils.py of the component WebSocket Endpoint. This manipulation of the argument callSid causes input validation. This vulnerability appears as CVE-2026-54695. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability has been found in pipecat-ai pipecat up to 1.3.x and classified as critical. Affected by this vulnerability is an unknown function of the file src/pipecat/runner/utils.py of the component WebSocket Endpoint. The manipulation of the argument callSid with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-54695 since 06/16/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 1.4.0 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• pipecat-ai

Name

• pipecat

Version

• 1.0
• 1.1
• 1.2
• 1.3

Website

• Product: https://github.com/pipecat-ai/pipecat/

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