Exposure of System Data to an Unauthorized Control Sphere Affecting nodejs20-docs package, versions <1:20.20.0-1.amzn2023.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-AMZN2023-NODEJS20DOCS-15246061
  • published6 Feb 2026
  • disclosed20 Jan 2026

Introduced: 20 Jan 2026

CVE-2025-55131  (opens in a new tab)
CWE-497  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 nodejs20-docs to version 1:20.20.0-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1402.

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.

A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the vm module with the timeout option. Under specific timing conditions, buffers allocated with Buffer.alloc and other TypedArray instances like Uint8Array may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.

CVSS Base Scores

version 3.1