CVE-2026-21717 Affecting nodejs22 package, versions <22.22.2-150700.3.9.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-SLES157-NODEJS22-16115459
  • published21 Apr 2026
  • disclosed20 Apr 2026

Introduced: 20 Apr 2026

NewCVE-2026-21717  (opens in a new tab)

How to fix?

Upgrade SLES:15.7 nodejs22 to version 22.22.2-150700.3.9.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs22 package and not the nodejs22 package as distributed by SLES. See How to fix? for SLES:15.7 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