CVE-2026-21637 Affecting nodejs24-docs package, versions <24.14.1-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

Social Trends
EPSS
1.06% (60th percentile)

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  • Snyk IDSNYK-SLES1600-NODEJS24DOCS-16120476
  • published22 Apr 2026
  • disclosed13 Apr 2026

Introduced: 13 Apr 2026

CVE-2026-21637  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 nodejs24-docs to version 24.14.1-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs24-docs package and not the nodejs24-docs package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1