CVE-2025-55199
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductHelm
PublishedAug 14, 2025
First seenAug 14, 2025
Weakness typeCWE-770Allocation of resources without limits
How to fix
Update
- helm helm3.18.5 or later
- helm.sh/helm/v33.18.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| helm helm | v < 3.18.5 | 3.18.5 |
| helm.sh/helm/v3Go | v < 3.18.5 | 3.18.5 |
| helm.sh/helmGo | No range specified | — |
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