CVE-2026-26954

CRITICAL EPSS 41.7%
Published Mar 13, 20263mo ago · Modified Mar 17, 20263mo ago
10.0 CVSS 3.1
Critical
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Mar 17, 2026 3mo ago

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34.

CVSS Details

Base Score
10.0
Exploitability
3.9
Impact
6.0
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
41.7% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-94 Improper Control of Generation of Code (Code Injection) Injection

Affected Products 1

VendorProductVersionRange
nyarivsandboxjs* <0.8.34

References 1

  • github.com https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv
    Vendor AdvisoryExploit

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.