Medium severity · published Apr 9, 2025
CVE-2025-32387
Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow
6.5
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
helm · helm
< 3.17.3 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-32387
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-32387
Patch
https://github.com/helm/helm/commit/d8ca55fc669645c10c0681d49723f4bb8c0b1ce7
Third Party Advisory
https://github.com/helm/helm/security/advisories/GHSA-5xqw-8hwv-wg92
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