Botpress - Credential Disclosure via Twilio Webhook Handler

published 2026-03-27 7 mo ago modified 2026-08-18 2 mo ago also EUVD-2026-16632

cvss: 8.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 7 mo ago (2026-03-27)

Exploit prediction

0.16% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected products

botpress botpress

Classification

Weakness

CWE-345 Insufficient Verification of Data Authenticity
CWE-352 Cross-Site Request Forgery

References

tenable.com /security/research/tra-2026-22
third-party-advisory

Sources

CVE List CVE-2026-4984
NVD CVE-2026-4984

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary