CVE Database›CVE-2025-55131

CVE-2025-55131

nodejs: Nodejs uninitialized memory exposure

Loading…

Severity

Important

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · January 21, 2026

Updated · October 16, 2026

Description

A memory exposure flaw has been discovered in Node.js. 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.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

CVSS / CWE

CVSS 3.1 · 7.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

CWE-497 · Exposure of Sensitive System Information to an Unauthorized Control Sphere