CVE-2026-21713 Affecting nodejs package, versions <1:24.14.1-2.module+el8.10.0+90873+35652ecc


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-ORACLE8-NODEJS-16077177
  • published16 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

NewCVE-2026-21713  (opens in a new tab)

How to fix?

Upgrade Oracle:8 nodejs to version 1:24.14.1-2.module+el8.10.0+90873+35652ecc or higher.
This issue was patched in ELSA-2026-7670.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs package and not the nodejs package as distributed by Oracle. See How to fix? for Oracle:8 relevant fixed versions and status.

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 Base Scores

version 3.1