CVEvulnerability

CVE-2026-43898

10.0 CRITICAL Published 2026-05-28 Modified 2026-10-14 Official page ↗
Status
Modified
Published
2026-05-28
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-94

Description

SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6.

Affected configurations

• nyariv sandboxjs (< 0.9.6)

Related

Weakness · CWE (1)

  • CWE-94 Improper Control of Generation of Code weakness

References