CVE-2026-34841
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).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-494, CWE-506
- Affected
- usebruno/bruno
- Source
- security-advisories@github.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.