Uncaught Exception Affecting nodejs20-docs package, versions <1:20.20.1-1.amzn2023.0.3


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.13% (33rd percentile)

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  • Snyk IDSNYK-AMZN2023-NODEJS20DOCS-15921242
  • published7 Apr 2026
  • disclosed12 Mar 2026

Introduced: 12 Mar 2026

NewCVE-2026-1528  (opens in a new tab)
CWE-248  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 nodejs20-docs to version 1:20.20.1-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-1524.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nodejs20-docs package and not the nodejs20-docs package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process.

Patches

Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.

CVSS Base Scores

version 3.1