CVE-2026-34841CWE-494CWE-506

Axios npm Supply Chain Incident Impacting @usebruno/cli

Critical · published April 6, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
23.8
In the wild
Unconfirmed
What it is

Bruno is an open source IDE for exploring and testing APIs. Prior to 3.2.1, Bruno was affected by a supply chain attack involving compromised versions of the axios npm package, which introduced a hidden dependency deploying a cross-platform Remote Access Trojan (RAT). Users of @usebruno/cli who ran npm install between 00:21 UTC and ~03:30 UTC on March 31, 2026 may have been impacted. Upgrade to 3.2.1

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00321 · 23.8th percentile
Weaknesses
CWE-494 · Download of Code Without Integrity Check; CWE-506 · Embedded Malicious Code
Published
2026-04-06T16:08Z
EPSS history
Timeline
  • 06 APR 16:08Z
    Axios npm Supply Chain Incident Impacting @usebruno/cli
    cvelistv5