Is CVE-2026-34217 actively exploited?

No active exploitation of CVE-2026-34217 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-34217 be exploited remotely?

Yes. CVE-2026-34217 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-34217?

CVE-2026-34217 has a CVSS score of 7.2 (HIGH).

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HIGH

CVE-2026-34217

CWE-668Published: April 6, 2026· Updated: Apr 9, 2026

7.2

CVSS v3.1

EPSS:0.07%probability of exploitation in 30 daysPercentile:21.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-34217 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.