GHSA-9h84-qmv7-982p

Suggest an improvement
Source
https://github.com/advisories/GHSA-9h84-qmv7-982p
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-9h84-qmv7-982p/GHSA-9h84-qmv7-982p.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-9h84-qmv7-982p
Aliases
Downstream
Related
Published
2025-08-14T00:01:34Z
Modified
2025-08-18T20:13:38.615797Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
Details

A Helm contributor discovered that it was 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.

Impact

A malicious chart can point $ref in values.schema.json to a device (e.g. /dev/*) or other problem file which could cause Helm to use all available memory and have an out of memory (OOM) termination.

Patches

This issue has been resolved in Helm v3.18.5.

Workarounds

Make sure that all Helm charts that are being loaded into Helm doesn't have any reference of $ref pointing to /dev/zero.

References

Helm's security policy is spelled out in detail in our SECURITY document.

Credits

Disclosed by Jakub Ciolek at AlphaSense.

Database specific 
{
    "github_reviewed_at": "2025-08-14T00:01:34Z",
    "severity": "MODERATE",
    "cwe_ids": [
        "CWE-770"
    ],
    "nvd_published_at": "2025-08-14T00:15:27Z",
    "github_reviewed": true
}
References

Affected packages

Go / helm.sh/helm/v3

Package

Name
helm.sh/helm/v3
View open source insights on deps.dev
Purl
pkg:golang/helm.sh/helm/v3

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.18.5