CVE-2025-27209
nodejs: Node.js Rapidhash HashDoS Vulnerability
Severity
ModerateRed Hat Product Security
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 · 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE-400 · Uncontrolled Resource Consumption