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TI-2026-39516 Aliases CVE-2026-54695GHSA-j8cv-x86q-rj85

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

Priority HIGH 66CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00564 47th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed pipecat (pipecat-ai): 1.4.0pipecat-ai (PyPI): 1.4.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
pipecat-aipipecatbefore 1.4.01.4.0Patch availableCNA
—pipecat-ai (PyPI)0.0.77 to before 1.4.01.4.0Patch availableGHSA-j8cv-x86q-rj85
  • pipecat Vendorpipecat-ai Affected before 1.4.0 Fixed in 1.4.0 Patch available CNA
  • pipecat-ai (PyPI) Vendor— Affected 0.0.77 to before 1.4.0 Fixed in 1.4.0 Patch available GHSA-j8cv-x86q-rj85

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:pipecat:pipecat:*:*:*:*:*:python:*:*before 1.4.0Vulnerablepipecat-ai
  • cpe:2.3:a:pipecat:pipecat:*:*:*:*:*:python:*:* Versions before 1.4.0 Vulnerable ·pipecat-ai

Remediation

  • Fix · CNA pipecat (pipecat-ai) Fixed in 1.4.0
  • Fix · GHSA-j8cv-x86q-rj85 pipecat-ai (PyPI) Fixed in 1.4.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54695
  2. 2026-10-03 Alias added: GHSA-j8cv-x86q-rj85

References

Exploit 1

Patch 4

Other 1

  • TI-2025-38641 Pipecat vulnerable to Remote Code Execution by Pickle Deserialization via LivekitFrameSerializer CVSS 3.1CRITICAL 9.8
  • TI-2026-32603 Pipecat: Path Traversal in Pipecat Runner `/files` Endpoint — Arbitrary File Read via `%2F`-Encoded Separator CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences