10

CVE-2026-25586

Exploit

SandboxJS has a Sandbox Escape via Prototype Whitelist Bypass and Host Prototype Pollution

SandboxJS is a JavaScript sandboxing library. Prior to 0.8.29, a sandbox escape is possible by shadowing hasOwnProperty on a sandbox object, which disables prototype whitelist enforcement in the property-access path. This permits direct access to __proto__ and other blocked prototype properties, enabling host Object.prototype pollution and persistent cross-sandbox impact. This vulnerability is fixed in 0.8.29.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nyariv ≫ Sandboxjs SwPlatformnode.js Version < 0.8.29
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.64% 0.457
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 10 3.9 6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

https://github.com/nyariv/SandboxJS/commit/67cb186c41c78c51464f70405504e8ef0a6e43c3
Patch
https://github.com/nyariv/SandboxJS/security/advisories/GHSA-jjpw-65fv-8g48
Vendor Advisory
Exploit