CVE-2026-55388
piscina: Prototype Pollution Gadget → RCE via inherited options.filename
Vexday Risk Score
21Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 8.1EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —
Ciclo de vida
22 jun 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
piscina is a node.js worker pool implementation. Prior to 6.0.0-rc.2, 5.2.0, and 4.9.3, piscina's constructor and run() paths read the filename option via plain member access. Both reads fall through the prototype chain when the caller's options object doesn't have filename as an own property. When Object.prototype.filename is polluted upstream the inherited value flows to worker_threads.Worker import and the attacker's .mjs runs in the worker. This vulnerability is fixed in 6.0.0-rc.2, 5.2.0, and 4.9.3.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Productos afectados
piscinajs · piscina¿Quieres saber si tu infraestructura está expuesta a esto?
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