CVE-2026-21717 Affecting nodejs24-devel package, versions <1:24.14.1-2.el10_1


Severity

Recommended
high

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.28% (20th percentile)

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  • Snyk IDSNYK-ROCKY10-NODEJS24DEVEL-16088654
  • published16 Apr 2026
  • disclosed30 Mar 2026

Introduced: 30 Mar 2026

CVE-2026-21717  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 nodejs24-devel to version 1:24.14.1-2.el10_1 or higher.
This issue was patched in RLSA-2026:7675.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs24-devel package and not the nodejs24-devel package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

A flaw in V8's string hashing mechanism causes integer-like strings to be hashed to their numeric value, making hash collisions trivially predictable. By crafting a request that causes many such collisions in V8's internal string table, an attacker can significantly degrade performance of the Node.js process.

The most common trigger is any endpoint that calls JSON.parse() on attacker-controlled input, as JSON parsing automatically internalizes short strings into the affected hash table.

This vulnerability affects 20.x, 22.x, 24.x, and 25.x.

CVSS Base Scores

version 3.1