CVE-2025-32387

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.

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: 0.41%• Percentile: 33%

Techniques & Countermeasures

• CWE-121•Stack-based Buffer Overflow

  A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

• CWE-674•Uncontrolled Recursion

  The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack.

Affected Systems

• helm.sh/helm•v3

  < 3.17.3

• helm•helm

  < 3.17.3

References (4)

• https://github.com/helm/helm/security/advisories/GHSA-5xqw-8hwv-wg92
• https://github.com/helm/helm/commit/d8ca55fc669645c10c0681d49723f4bb8c0b1ce7
• https://nvd.nist.gov/vuln/detail/CVE-2025-32387
• https://github.com/helm/helm