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Vulnerability record · CVE-2026-34841 · published 6 April 2026

CVE-2026-34841: Usebruno bruno download of code without integrity check vulnerability

Usebruno · Bruno

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

9.8 CVSS 3.1 Critical EPSS 0.32% · top 77.5% CWE-494 · Download of code without integrity checkCWE-506 · CWE-506
9.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

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

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/axios/axios/issues/10604 Issue Tracking
https://github.com/usebruno/bruno/pull/7632 Issue TrackingPatch
https://github.com/usebruno/bruno/security/advisories/GHSA-658g-p7jg-wx5g MitigationPatchVendor Advisory
https://www.aikido.dev/blog/axios-npm-compromised-maintainer-hijacked-rat MitigationPress/Media Coverage

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-34841), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.