CVE-2026-34841

Name: CVE-2026-34841
Creator: NVD / NIST
Published: 2026-04-06T17:17:10.59+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2026-34841 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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). EPSS estimates a 0.23% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.23%

14.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Usebruno	Bruno	< 3.2.1

References

https://github.com/axios/axios/issues/10604Issue Tracking
https://github.com/usebruno/bruno/pull/7632Issue Tracking, Patch
https://github.com/usebruno/bruno/security/advisories/GHSA-658g-p7jg-wx5gMitigation, Patch, Vendor Advisory
https://www.aikido.dev/blog/axios-npm-compromised-maintainer-hijacked-ratMitigation, Press/Media Coverage

Timeline

Published: Apr 6, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34841?

How severe is CVE-2026-34841?

CVE-2026-34841 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34841?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34841?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST