{"id":"GHSA-9h84-qmv7-982p","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.\n\n### Impact\nA malicious chart can point `$ref` in _values.schema.json_ to a device (e.g. `/dev/*`) or other problem file which could cause Helm to use all available memory and have an out of memory (OOM) termination.\n\n### Patches\nThis issue has been resolved in Helm v3.18.5.\n\n### Workarounds\nMake sure that all Helm charts that are being loaded into Helm doesn't have any reference of `$ref` pointing to `/dev/zero`.\n\n### References\nHelm's security policy is spelled out in detail in our [SECURITY](https://github.com/helm/community/blob/master/SECURITY.md) document.\n\n### Credits\nDisclosed by Jakub Ciolek at AlphaSense.","aliases":["BIT-helm-2025-55199","CVE-2025-55199","GO-2025-3887"],"modified":"2026-07-17T21:13:05.094052282Z","published":"2025-08-14T00:01:34Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2025-08-14T00:01:34Z","nvd_published_at":"2025-08-14T00:15:27Z","cwe_ids":["CWE-770"]},"references":[{"type":"WEB","url":"https://github.com/helm/helm/security/advisories/GHSA-9h84-qmv7-982p"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55199"},{"type":"WEB","url":"https://github.com/helm/helm/commit/b78692c18f0fb38fe5ba4571a674de067a4c53a5"},{"type":"PACKAGE","url":"https://github.com/helm/helm"}],"affected":[{"package":{"name":"helm.sh/helm/v3","ecosystem":"Go","purl":"pkg:golang/helm.sh/helm/v3"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.18.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-9h84-qmv7-982p/GHSA-9h84-qmv7-982p.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}