CVE-2025-32387: helm Stack Overflow — Fix

Description

Helm is a package manager for Charts for Kubernetes. 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. This issue has been resolved in Helm v3.17.3.

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CVSS v3.1 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-121 CWE-121

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
helm	helm	< 3.17.3

References

Advisories & Patches

https://github.com/helm/helm/commit/d8ca55fc669645c10c0681d49723f4bb8c0b1ce7

Other References

https://github.com/helm/helm/security/advisories/GHSA-5xqw-8hwv-wg92

Frequently Asked Questions

What is CVE-2025-32387? +

Helm is a package manager for Charts for Kubernetes. 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. This issue has been resolved in Helm v3.17.3. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-32387? +

CVE-2025-32387 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-32387? +

CVE-2025-32387 affects products from helm, specifically: helm. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32387? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-32387