CVE-2025-32386

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.38%• Percentile: 30%

Techniques & Countermeasures

• CWE-770•Allocation of Resources Without Limits or Throttling

  The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

• CWE-789•Memory Allocation with Excessive Size Value

  The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Affected Systems

• helm.sh/helm•v3

  < 3.17.3

• helm•helm

  < 3.17.3

References (4)

• https://github.com/helm/helm/security/advisories/GHSA-4hfp-h4cw-hj8p
• https://github.com/helm/helm/commit/d8ca55fc669645c10c0681d49723f4bb8c0b1ce7
• https://nvd.nist.gov/vuln/detail/CVE-2025-32386
• https://github.com/helm/helm