What’s Vulnerable › Vulnerabilities
CVE-2025-30354: Bruno ignores Safe-Mode in Asserts expressions
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2025-04-01 · updated 2026-06-17
- Weakness: CWE-942
Description
Bruno is an open source IDE for exploring and testing APIs. A bug in the assertion runtime caused assert expressions to run in Developer Mode, even if Safe Mode was selected. The bug resulted in the sandbox settings to be ignored for the particular case where a single request is run/sent. This vulnerability's attack surface is limited strictly to scenarios where users import collections from untrusted or malicious sources. The exploit requires deliberate action from the user—specifically, downloading and opening an externally provided malicious Bruno collection. The vulnerability is fixed in 1.39.1.
Affected products
- usebruno bruno: before 1.39.1 — fixed in 1.39.1
How to fix
Upgrade to a fixed version: usebruno bruno 1.39.1. Check the vendor advisory for mitigations.
References
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