CVE-2025-34146 – @nyariv/sandboxjs

Package

Manager: npm
Name: @nyariv/sandboxjs
Vulnerable Version: >=0 <0.8.24

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:P/RL:U/RC:R

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00078 pctl0.23919

Details

@nyariv/sandboxjs has Prototype Pollution vulnerability that may lead to RCE A prototype pollution vulnerability exists in @nyariv/sandboxjs versions <= 0.8.23, allowing attackers to inject arbitrary properties into Object.prototype via crafted JavaScript code. This can result in a denial-of-service (DoS) condition or, under certain conditions, escape the sandboxed environment intended to restrict code execution. The vulnerability stems from insufficient prototype access checks in the sandbox’s executor logic, particularly in the handling of JavaScript function objects returned.

Metadata

Created: 2025-07-31T15:35:50Z
Modified: 2025-07-31T19:28:27Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-9qm3-6qrr-c76m/GHSA-9qm3-6qrr-c76m.json
CWE IDs: ["CWE-1321"]
Alternative ID: GHSA-9qm3-6qrr-c76m
Finding: F390
Auto approve: 1