CVE-2025-32386: helm DoS — Fix

Description

Helm is a tool for managing Charts. A chart archive file can be crafted in a manner where it expands to be significantly larger uncompressed than compressed (e.g., >800x difference). When Helm loads this specially crafted chart, memory can be exhausted causing the application to terminate. 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-770 CWE-770

CWE-789 CWE-789

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-4hfp-h4cw-hj8p

Frequently Asked Questions

What is CVE-2025-32386? +

Helm is a tool for managing Charts. A chart archive file can be crafted in a manner where it expands to be significantly larger uncompressed than compressed (e.g., >800x difference). When Helm loads this specially crafted chart, memory can be exhausted causing the application to terminate. 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-2025-32386? +

CVE-2025-32386 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-2025-32386? +

CVE-2025-32386 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-2025-32386? +

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-2025-32386