CVE-2025-55199

MEDIUM

Helm < 3.18.5 - Denial of Service via Malicious JSON Schema File

Title source: llm
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 6.5
EPSS 0.0031
EPSS Percentile 22.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (2)
helm/helm < 3.18.5
helm/v3 0 - 3.18.5Go
Published Aug 14, 2025
Tracked Since Feb 18, 2026