CVE-2025-55199 MEDIUM

CVE-2025-55199: Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion

Vendor Helm
Product helm
Weakness CWE-770 · Uncontrolled resource consumption
Published August 13, 2025
Last update August 14, 2025
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, it is possible to craft a JSON Schema file in a manner which could cause Helm to use all available memory and have an out of memory (OOM) termination. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring all Helm charts that are being loaded into Helm do not have any reference of $ref pointing to /dev/zero.

Key dates

02Disclosure timeline

August 13, 2025 CVE published
August 14, 2025 Record updated