CVE-2026-21717

Katalog CVE

CVSS 5.9 · Medium EPSS 0,27%

Kerentanan Use of Weak Hash pada nodejs node.js. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

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**.

Rincian

Terbit di NVD

30 Maret 2026

Terakhir diubah

19 Agustus 2026

Status NVD

Analyzed

CVSS 3.1

5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-328: Use of Weak Hash

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 17,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://nodejs.org/en/blog/vulnerability/march-2026-security-releases advisory vendor