A flaw in Node.js TLS error handling allows remote attackers… (CVE-2026-21637)

Description d'origine

La description telle que publiée par la source (souvent en anglais).

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.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Paquets affectés

Bitnami node

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"20.20.0"},{"introduced":"21.0.0"},{"fixed":"22.22.0"},{"introduced":"23.0.0"},{"fixed":"24.13.0"},{"introduced":"25.0.0"},{"fixed":"25.3.0"}]}]

Bitnami node-min

[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"20.20.0"},{"introduced":"21.0.0"},{"fixed":"22.22.0"},{"introduced":"23.0.0"},{"fixed":"24.13.0"},{"introduced":"25.0.0"},{"fixed":"25.3.0"}]}]

État des correctifs par distribution

Paquets corrigés publiés par chaque distribution pour cette CVE

Alpine Linux ALPINE-CVE-2026-21637 nodejs Corrigé dans: 22.22.2-r0
Debian DEBIAN-CVE-2026-21637 nodejs Corrigé dans: 12.22.12~dfsg-1~deb11u8
Ubuntu UBUNTU-CVE-2026-21637 nodejs

Références

advisory nodejs.org
web nvd.nist.gov