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GHSA-5xqw-8hwv-wg92

Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow

Source: GitHub Advisory Database (reviewed) Moderate CVE-2025-32387

Packages

EcosystemPackageAffectedFixed in
Go helm.sh/helm/v3 < 3.17.3 3.17.3

Details

As written in the advisory (Markdown source, shown as plain text).

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.

References

External links from the advisory. They lead to third-party sites.