CVE-2026-25142

CRITICAL

SandboxJS < 0.8.27 - Prototype Pollution via __lookupGetter__

Title source: llm
STIX 2.1

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.27, SanboxJS does not properly restrict __lookupGetter__ which can be used to obtain prototypes, which can be used for escaping the sandbox / remote code execution. This vulnerability is fixed in 0.8.27.

References (3)

Core 3

Scores

CVSS v3 10.0
EPSS 0.0109
EPSS Percentile 61.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-1321 CWE-94
Status published
Products (2)
nyariv/sandboxjs < 0.8.27
nyariv/sandboxjs 0 - 0.8.27npm
Published Feb 02, 2026
Tracked Since Feb 18, 2026