CVE-2026-34841 CRITICAL

CVE-2026-34841: Axios npm Supply Chain Incident Impacting @usebruno/cli

Vendor Usebruno
Product bruno
Weakness CWE-494 · Download without integrity check
Published April 6, 2026
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

April 6, 2026 CVE published
April 8, 2026 Record updated