CVE-2025-55199CWE-770

Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion

Medium · published August 13, 2025

CVSS v3.1
6.5
EPSS
0%
Percentile
25.5
In the wild
Unconfirmed
What it is

Helm is a package manager for Charts for Kubernetes. Prior to version 3.18.5, it is possible to craft a JSON Schema file in a manner which could cause Helm to use all available memory and have an out of memory (OOM) termination. This issue has been resolved in Helm 3.18.5. A workaround involves ensuring all Helm charts that are being loaded into Helm do not have any reference of $ref pointing to /dev/zero.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00334 · 25.5th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2025-08-13T23:23Z
EPSS history
Timeline
  • 13 AUG 23:23Z
    Helm Charts with Specific JSON Schema Values Can Cause Memory Exhaustion
    cvelistv5