{"id":"CVE-2025-32387","aliases":["GHSA-5xqw-8hwv-wg92","BIT-helm-2025-32387","GO-2025-3602"],"title":"Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow","summary":"Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","vendor":"helm","product":"helm.sh/helm/v3","ecosystem":"go","affected":["helm.sh/helm/v3 < 3.17.3"],"patched":["helm.sh/helm/v3 3.17.3"],"published":"2025-04-10","updated":"2026-09-10","sourceUpdated":"2026-09-10T03:50:57.093727559Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-5xqw-8hwv-wg92","references":[{"url":"https://github.com/helm/helm/security/advisories/GHSA-5xqw-8hwv-wg92"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-32387"},{"url":"https://github.com/helm/helm/commit/d8ca55fc669645c10c0681d49723f4bb8c0b1ce7"},{"url":"https://github.com/helm/helm"}],"tags":["osv","go"],"epss":0.00483,"epssPercentile":0.40737,"ingestedAt":"2026-09-12T03:13:01.757Z","slug":"CVE-2025-32387","body":"## Overview\n\nA Helm contributor discovered that a specially crafted JSON Schema within a chart can lead to a stack overflow.\n\n### Impact\nA JSON Schema file within a chart can be crafted with a deeply nested chain of references, leading to parser recursion that can exceed the stack size limit and trigger a stack overflow. \n\n### Patches\nThis issue has been resolved in Helm v3.17.3.\n\n### Workarounds\nEnsure that the JSON Schema within any charts loaded by Helm does not have a large number of nested references. These JSON Schema files are larger than 10 MiB.\n\n### For more information\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.\n\n## Affected packages\n\n- `helm.sh/helm/v3 < 3.17.3`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `helm.sh/helm/v3 3.17.3`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}