CVE-2026-23830 is a critical sandbox escape vulnerability affecting SandboxJS versions prior to 0.8.26. The flaw allows an attacker to bypass the sandboxing mechanism by accessing the native AsyncFunction constructor, which was not properly isolated. This enables remote code execution (RCE) outside the sandbox, granting full access to the host environment. With a CVSS score of 10.0, this vulnerability is easily exploitable over the network with low complexity and no user interaction, leading to complete compromise of confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, the critical severity warrants immediate patching to version 0.8.26.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.8.26CPE matchmatch criteria | cpe:2.3:a:nyariv:sandboxjs:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
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The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.