CVE-2025-30354

HIGH
2025-04-01 [email protected]
8.7
CVSS 4.0
Share

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
A
Scope
X

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 18:34 vuln.today
PoC Detected
Sep 22, 2025 - 14:33 vuln.today
Public exploit code
CVE Published
Apr 01, 2025 - 15:16 nvd
HIGH 8.7

Tags

Denial Of Service Cors Misconfiguration Bruno

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.

Analysis

Bruno is an open source IDE for exploring and testing APIs. Rated high severity (CVSS 8.7), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified under CWE-942. 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 include: Usebruno Bruno.

Affected Products

Usebruno Bruno.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

64
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +44
POC: +20

Share

CVE-2025-30354 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy