CVE-2026-34841

Axios npm Supply Chain Incident Impacting @usebruno/cli

State: Published
Severity: 9.8 Critical
Published: Apr 6, 2026
Updated: Apr 8, 2026
Reserved: Mar 30, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-494 Download of Code Without Integrity Check
CWE-506 Embedded Malicious Code

Affected Products

Product	Versions
brunousebruno	< 3.2.1Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.