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

Type: advisorySources: OSV

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.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-54695
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 02:59 UTC · Revision 1

Source evidence

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

core-osv · Original source

Published 9 Jul 2026, 18:52 UTC

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.

osv:CVE-2026-54695
Complete source record
{
  "id": "8d20bd5cabf3640fac3bb140d24c0906669f8e207a0f2da76582617a4956f92c",
  "url": "https://osv.dev/vulnerability/CVE-2026-54695",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Pipecat: Telephony WebSocket `/ws` Unauthenticated Call-Control Abuse via Attacker-Supplied Call SID",
    "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.",
    "evidence": "osv:CVE-2026-54695",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-54695",
      "aliases": [
        "CVE-2026-54695",
        "GHSA-j8cv-x86q-rj85",
        "PYSEC-2026-2878"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
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              "repo": "https://github.com/pipecat-ai/pipecat",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
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                {
                  "fixed": "3a69d3f79cedc8daab2a57e44a17d34a18f1c096"
                },
                {
                  "fixed": "3032da53434c5ef01d368654b3551cf21c50dec9"
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                {
                  "fixed": "88440676996e5e548e1aecea5d565e1c48ccf6fa"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pipecat:pipecat:*:*:*:*:*:python:*:*",
                    "range": [
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                    "source": "CPE_RANGE"
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                    "source": "REFERENCES_COMMIT"
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                    "range": [
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                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.4.0"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54695.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.054899661Z",
      "provider": "osv",
      "references": [
        "https://github.com/pipecat-ai/pipecat/releases/tag/v1.4.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54695.json",
        "https://github.com/pipecat-ai/pipecat/security/advisories/GHSA-j8cv-x86q-rj85",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-54695",
        "https://github.com/pipecat-ai/pipecat/commit/3032da53434c5ef01d368654b3551cf21c50dec9",
        "https://github.com/pipecat-ai/pipecat/commit/88440676996e5e548e1aecea5d565e1c48ccf6fa",
        "https://github.com/pipecat-ai/pipecat/pull/4660"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54695.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-54695",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517568,
  "published_at": "2026-07-09T18:52:33.008+00:00"
}