What’s Vulnerable › Vulnerabilities

CVE-2026-54695: Pipecat: Telephony WebSocket `/ws` Unauthenticated Call-Control Abuse via Attacker-Supplied Call SID

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-07-09 · updated 2026-10-25
• Weakness: CWE-862

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

• pipecat-ai pipecat: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: pipecat-ai pipecat 1.4.0. Check the vendor advisory for mitigations.

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
• https://github.com/pipecat-ai/pipecat/security/advisories/GHSA-j8cv-x86q-rj85

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