CVE-2026-54695

HIGH 7.5

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

CVSS Score

7.5

EPSS Score

0.3%

EPSS Percentile

25th

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.

CWE	CWE-862
Vendor	pipecat-ai
Product	pipecat
Published	Jul 9, 2026
Last Updated	Jul 10, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

High

Affected Versions

pipecat-ai / pipecat

< 1.4.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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