Critical severity10.0NVD Advisory· Published Mar 13, 2026· Updated Jun 17, 2026
CVE-2026-26954
CVE-2026-26954
Description
SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
@nyariv/sandboxjsnpm | < 0.8.34 | 0.8.34 |
Affected products
3Patches
Vulnerability mechanics
References
5- github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgvnvdExploitVendor AdvisoryWEB
- github.com/advisories/GHSA-6r9f-759j-hjgvghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2026-26954ghsaADVISORY
- github.com/nyariv/SandboxJS/commit/e01505b1ea49f4f13956cd12b7ce01b83d2ee085ghsaWEB
- github.com/nyariv/SandboxJS/releases/tag/v0.8.34ghsaWEB
News mentions
0No linked articles in our index yet.