CVE-2025-30354CWE-942

Bruno ignores Safe-Mode in Asserts expressions

High · published April 1, 2025

CVSS v4.0
8.7
EPSS
0%
Percentile
29.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.00369 · 29.6th percentile
Weakness
CWE-942 · Permissive Cross-domain Security Policy with Untrusted Domains
Published
2025-04-01T14:21Z
EPSS history
Timeline
  • 01 APR 14:21Z
    Bruno ignores Safe-Mode in Asserts expressions
    cvelistv5