CVE-2026-21713

MEDIUM5.9EPSS 0.01%
發布日:2026/3/30修改日:2026/4/5
也稱為:ALPINE-CVE-2026-21713

描述

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**.

受影響套件(4)

  • Alpine/nodejsfrom 0, < 22.22.2-r0
  • Bitnami/nodefrom 0, < 20.20.2, >= 21.0.0, < 22.22.2, >= 23.0.0, < 24.14.1, >= 25.0.0, < 25.8.2
  • Bitnami/node-minfrom 0, < 20.20.2, >= 21.0.0, < 22.22.2, >= 23.0.0, < 24.14.1, >= 25.0.0, < 25.8.2
  • Debian/nodejsfrom 0, < 18.20.4+dfsg-1~deb12u2

CVSS 分數

來源版本嚴重程度向量
osvCVSS 3.1MEDIUM5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

參考連結(4)