piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env

Date Oct 1, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product npm · piscina

CVE CVE-2026-102992

Critical vendor advisory CVE-2026-102992

Summary

piscina: Prototype-pollution gadget in ThreadPool.options allows RCE via execArgv / loadBalancer / env

Why it matters

GitHub has published a reviewed security advisory for piscina. Prioritize it with other application dependency updates, especially because EPSS places it in the 44% percentile.

Operator check

Check whether piscina is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.2. EPSS probability: 0.6%; percentile: 44%.

Sources

GitHub Advisory GHSA-67c8-pqhq-4rmx NVD — CVE-2026-102992 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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