CVE-2025-30354: Bruno ignores Safe-Mode in Asserts expressions
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.
Classification
CVE ID: CVE-2025-30354
CVSS Base Severity: HIGH
CVSS Base Score: 8.7
CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected Products
Vendor: usebruno
Product: bruno
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.14% (scored less or equal to compared to others)
EPSS Date: 2025-04-30 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-30354https://github.com/usebruno/bruno/security/advisories/GHSA-hffg-7v8v-79j3