CVE Database›Document archive›CVE-2025-27209

CVE-2025-27209

nodejs: Node.js Rapidhash HashDoS Vulnerability

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Severity

Moderate

Red Hat Product Security

5.3

CVSS 3.0

Review impact separately from score.

Published · July 19, 2025

Updated · June 30, 2026

Description

A flaw was found in nodejs. The V8 component’s rapidhash implementation introduces a HashDoS vulnerability, allowing an attacker who can control the strings being hashed to trigger excessive CPU usage by generating numerous hash collisions. This exploitation vector results in an application level denial of service condition due to resource exhaustion.

Statement

The severity of this vulnerability is rated Moderate, as it does not impact system availability. The effects are confined to the application layer, without compromising the underlying system stability.

No Red Hat products or offerings are affected by this vulnerability.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 5.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-400 · Uncontrolled Resource Consumption