HTTP Request Smuggling Affecting nodejs20-libs-debuginfo package, versions <1:20.19.2-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-AMZN2023-NODEJS20LIBSDEBUGINFO-10339789
  • published11 Jun 2025
  • disclosed19 May 2025

Introduced: 19 May 2025

CVE-2025-23167  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 nodejs20-libs-debuginfo to version 1:20.19.2-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2025-1010.

NVD Description

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

A flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using \r\n\rX instead of the required \r\n\r\n. This inconsistency enables request smuggling, allowing attackers to bypass proxy-based access controls and submit unauthorized requests.

The issue was resolved by upgrading llhttp to version 9, which enforces correct header termination.

Impact:

  • This vulnerability affects only Node.js 20.x users prior to the llhttp v9 upgrade.

CVSS Base Scores

version 3.1