CVE Watch17 jul 2026

CVE-2026-48819

Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runt

CVSS

4.8

Medio

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 17 jul 2026 · Última mod.: 17 jul 2026 · CWE-1321

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Hey API is an ecosystem for turning API specifications into production-ready code. Prior to 0.97.3, dist/clients/core/params.ts ships a runtime template copied into generated SDKs as params.gen.ts, and buildClientParams writes unknown slot-prefixed keys such as $body_, $headers_, $path_, and $query_ directly to the corresponding slot, allowing $query___proto__ alongside a legitimate q field to set params.query through params["query"]["__proto__"] = value, call Object.setPrototypeOf(params.query, value), and expose inherited attacker-controlled keys during for..in iteration. This issue is fixed in version 0.97.3.

Referencias oficiales

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