Arbitrary Code Injection Affecting @nyariv/sandboxjs package, versions <0.8.34
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published13 Mar 2026
- disclosed13 Mar 2026
- creditc0rydoras
Introduced: 13 Mar 2026
NewCVE-2026-26954 (opens in a new tab)How to fix?
Upgrade @nyariv/sandboxjs to version 0.8.34 or higher.
Overview
@nyariv/sandboxjs is a Javascript sandboxing library.
Affected versions of this package are vulnerable to Arbitrary Code Injection via the executor module. An attacker can execute arbitrary code by crafting input that allows them get to arrays containing Function() and escape the intended sandbox restrictions by invoking system-level commands.