by Kastro
Paper/Archive/CVE-2026-34841

CVE-2026-34841

usebruno bruno — Axios npm Supply Chain Incident Impacting @usebruno/cli

EPSS 0.2%CVSS 9.8
critical.is priorityof 100
32
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 14.1.141 × 202.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
bruno< 3.2.1–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/usebruno/bruno/security/advisories/GHSA-658g-p7jg-wx5grefgithub.com/axios/axios/issues/10604refgithub.com/usebruno/bruno/pull/7632refaikido.dev/blog/axios-npm-compromised-maintainer-hijacked-rat