CVE-2025-55199

Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion

Published Aug 13, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-24647 Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
Github GHSA Github GHSA GHSA-9h84-qmv7-982p Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
History
Type Values Removed Values Added
CPEs cpe:2.3:a:helm:helm:*:*:*:*:*:*:*:*
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Helm
Helm helm
Vendors & Products Helm
Helm helm
Type Values Removed Values Added
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.
Title Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Aug 14, 2025, 2:50 PM
Reserved
Aug 8, 2025, 9:55 PM
Status
Analyzed
Published
Aug 14, 2025, 12:15 AM
Modified
Jun 17, 2026, 9:41 AM
Severity
Moderate
Public date
Aug 13, 2025, 11:23 PM