GHSA-6MJH-67RM-PH7X

Vulnerability from github – Published: 2026-03-27 15:30 – Updated: 2026-03-27 15:30
VLAI
Details

The Twilio integration webhook handler accepts any POST request without validating Twilio's 'X-Twilio-Signature'.

When processing media messages, it fetches user-controlled URLs ('MediaUrlN' parameters) using HTTP requests that include the integration's Twilio credentials in the 'Authorization' header.

An attacker can forge a webhook payload pointing to their own server and receive the victim's 'accountSID' and 'authToken' in plaintext (base64-encoded Basic Auth), leading to full compromise of the Twilio account.

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-4984"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-345"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-27T15:17:03Z",
    "severity": "HIGH"
  },
  "details": "The Twilio integration webhook handler accepts any POST request without validating Twilio\u0027s \u0027X-Twilio-Signature\u0027.\n\nWhen processing media messages, it fetches user-controlled URLs (\u0027MediaUrlN\u0027 parameters) using HTTP requests that include the integration\u0027s Twilio credentials in the \u0027Authorization\u0027 header.\n\nAn attacker can forge a webhook payload pointing to their own server and receive the victim\u0027s \u0027accountSID\u0027 and \u0027authToken\u0027 in plaintext (base64-encoded Basic Auth), leading to full compromise of the Twilio account.",
  "id": "GHSA-6mjh-67rm-ph7x",
  "modified": "2026-03-27T15:30:26Z",
  "published": "2026-03-27T15:30:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-4984"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/research/tra-2026-22"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}



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