CVE-2025-32387
MEDIUM6.5EPSS 0.01%Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow
Description
A Helm contributor discovered that a specially crafted JSON Schema within a chart can lead to a stack overflow. ### Impact A 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. ### Patches This issue has been resolved in Helm v3.17.3. ### Workarounds Ensure 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. ### For more information Helm's security policy is spelled out in detail in our [SECURITY](https://github.com/helm/community/blob/master/SECURITY.md) document. ### Credits Disclosed by Jakub Ciolek at AlphaSense.
Affected packages (3)
- Bitnami/helmfrom 0, < 3.17.3
- Go/helm.sh/helm/v3from 0, < 3.17.3
- Go/helm.sh/helm/v3from 0, < 3.17.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |