CVE-2026-25881
CVE-2026-25881 · @nyariv/sandboxjs has host prototype pollution from sandbox via array intermediary (sandbox escape)
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SandboxJS is a JavaScript sandboxing library. Prior to 0.8.31, a sandbox escape vulnerability allows sandboxed code to mutate host built-in prototypes by laundering the isGlobal protection flag through array literal intermediaries. When a global prototype reference (e.g., Map.prototype, Set.prototype) is placed into an array and retrieved, the isGlobal taint is stripped, permitting direct prototype mutation from within the sandbox. This results in persistent host-side prototype pollution and may enable RCE in applications that use polluted properties in sensitive sinks (example gadget: execSync(obj.cmd)). This vulnerability is fixed in 0.8.31.
CVSS 9.1 · Critique · EPSS 0,6% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
sandboxjs
- Versions du logiciel
- < 0.8.31: Concernée
Aucun correctif publié
@nyariv/sandboxjs npm
- Plages de versions concernées
- SEMVER: < 0.8.31
Mettez à jour vers 0.8.31