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

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Summary

CVECVE-2026-54695
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-09 19:17:06 UTC
Updated2026-07-10 15:16:41 UTC
DescriptionPipecat 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.003270000 probability, percentile 0.247380000 (date 2026-07-11)

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Pipecat-ai Pipecat affected < 1.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/pipecat-ai/pipecat/releases/tag/v1.4.0 [email protected] github.com
github.com/pipecat-ai/pipecat/commit/88440676996e5e548e1aecea5d565e1c48c... [email protected] github.com
github.com/pipecat-ai/pipecat/security/advisories/GHSA-j8cv-x86q-rj85 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/pipecat-ai/pipecat/commit/3032da53434c5ef01d368654b3551cf21c5... [email protected] github.com
github.com/pipecat-ai/pipecat/pull/4660 [email protected] github.com
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