CVE-2026-21717

nodejs node

MEDIUM 5.9

En bref

Source
NVD
EPSS
EPSS 0.27 % · centile 20 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
hackerone
Statut NVD
Analyzed

Description

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**.

Faiblesses (CWE)

  • CWE-328 — Utilisation d'une fonction de hachage faible

Références

Scores

VersionScoreVecteurÉvalué par
CVSS 3.0MEDIUM 5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hhackerone
CVSS 3.1MEDIUM 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)
CVSS 3.0MEDIUM 5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HNVD · support@hackerone.com (Secondary)

Références européennes

Avis du CERT-FR

Configurations affectées (CPE NVD)

Produits affectés

ProduitVersions
nodejs · nodeaffected 20.20.1 ≤ 20.20.1 ; affected 22.22.1 ≤ 22.22.1 ; affected 24.14.0 ≤ 24.14.0 ; affected 25.8.1 ≤ 25.8.1 ; affected 4.0 < 4.* ; affected 5.0 < 5.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD