VULNERABILITY INTELLIGENCE

CVE-2026-4984

CVSS score8.2 HIGH
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-03-27
Last modified2026-08-18
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Description

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-345

Primary references