CVE-2026-21637

nodejs node

MEDIUM 5.9

En bref

Source
NVD
EPSS
EPSS 1.12 % · centile 66 ()
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
hackerone
Statut NVD
Analyzed

Description

A flaw in Node.js TLS error handling allows remote attackers to crash or exhaust resources of a TLS server when `pskCallback` or `ALPNCallback` are in use. Synchronous exceptions thrown during these callbacks bypass standard TLS error handling paths (tlsClientError and error), causing either immediate process termination or silent file descriptor leaks that eventually lead to denial of service. Because these callbacks process attacker-controlled input during the TLS handshake, a remote client can repeatedly trigger the issue. This vulnerability affects TLS servers using PSK or ALPN callbacks across Node.js versions where these callbacks throw without being safely wrapped.

Faiblesses (CWE)

  • CWE-400 — Consommation de ressources non maîtrisée (déni de service)

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 3.1HIGH 7.5CVSS:3.1/AV:N/AC:L/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 20.19.6 ≤ 20.19.6 ; affected 22.21.1 ≤ 22.21.1 ; affected 24.12.0 ≤ 24.12.0 ; affected 25.2.1 ≤ 25.2.1 ; 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