ALPINE-CVE-2026-21713

ALPINE-CVE-2026-21713

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. Under certain threat models where high-resolution timing measurements are possible, this behavior could be exploited as a timing oracle to infer HMAC values. Node.js already provides timing-safe comparison primitives used elsewhere in the codebase, indicating this is an oversight rather than an intentional design decision. This vulnerability affects **20.x, 22.x, 24.x, and 25.x**.

CVSS 5.9 · Media · Corrección disponible

Publicación

2026-03-30T20:16:19.397Z

Actualización

2026-10-01T02:17:49.205733190Z

Pila tecnológica: system

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