// For flags

CVE-2025-32387

Helm Allows A Specially Crafted JSON Schema To Cause A Stack Overflow

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

This update for helm-mirror fixes the following issues. Fixed denial of service due to memory exhaustion after loading a specially crafter chart. Fixed stack overflow due to parser recursion that can exceed the stack size limit.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-04-06 CVE Reserved
  • 2025-04-09 CVE Published
  • 2025-04-10 CVE Updated
  • 2025-06-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-121: Stack-based Buffer Overflow
  • CWE-674: Uncontrolled Recursion
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Helm
Search vendor "Helm"
 Helm
Search vendor "Helm" for product "Helm"
 < 3.17.3
Search vendor "Helm" for product "Helm" and version " < 3.17.3"
en
Affected