SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, a scope modification vulnerability exists in @nyariv/sandboxjs. The vulnerability allows untrusted sandboxed code to leak internal interpreter objects through the new operator, exposing sandbox scope objects in the scope hierarchy to untrusted code; an unexpected and undesired exploit. While this could allow modifying scopes inside the sandbox, code evaluation remains sandboxed and prototypes remain protected throughout the execution. This vulnerability is fixed in 0.8.36.
Metrics
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References
History
Mon, 06 Apr 2026 16:45:00 +0000
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ssvc
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Mon, 06 Apr 2026 15:30:00 +0000
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| Description | SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, a scope modification vulnerability exists in @nyariv/sandboxjs. The vulnerability allows untrusted sandboxed code to leak internal interpreter objects through the new operator, exposing sandbox scope objects in the scope hierarchy to untrusted code; an unexpected and undesired exploit. While this could allow modifying scopes inside the sandbox, code evaluation remains sandboxed and prototypes remain protected throughout the execution. This vulnerability is fixed in 0.8.36. | |
| Title | SandboxJS has a Sandbox Escape via Prop Object Leak in New Handler | |
| Weaknesses | CWE-668 | |
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cvssV4_0
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-06T15:40:46.653Z
Reserved: 2026-03-26T15:57:52.324Z
Link: CVE-2026-34217
Vulnrichment
Updated: 2026-04-06T15:34:12.211Z
NVD
Status : Received
Published: 2026-04-06T16:16:34.890
Modified: 2026-04-06T16:16:34.890
Link: CVE-2026-34217
Redhat
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OpenCVE Enrichment
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