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Fencer Vulns
medium 6.5

CVE-2025-32386 json

Helm Allows A Specially Crafted Chart Archive To Cause Out Of Memory Termination

published 2025-04-09 19 mo ago modified 2026-09-10 1 mo ago also BIT-helm-2025-32386 , EUVD-2025-10670 , GHSA-4hfp-h4cw-hj8p , GO-2025-3601

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 40%
public exploits
0
none known

Summary

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.

Patch / fix

  • go helm.sh/helm/v3 3.17.3
  • bitnami helm 3.17.3
  • helm helm 3.17.3
  • terraform-provider-aws SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.11.0-150200.6.18.1
  • terraform-provider-tls SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.5.15.1
  • terraform-provider-helm SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.9.0-150200.6.23.1
  • terraform-provider-null SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.6.18.1
  • terraform-provider-local SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.0.0-150200.6.17.1
  • terraform-provider-google SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.43.0-150200.6.12.1
  • terraform-provider-random SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 3.0.0-150200.6.15.1
  • terraform-provider-azurerm SLE Module for Public Cloud 15 SP5, SLE Module for Public Cloud 15 SP4 2.32.0-150200.6.12.1

suse advisories SUSE-SU-2026:3056-1SUSE-SU-2025:01830-2SUSE-SU-2025:01830-1

  • govulncheck-vulndb openSUSE Tumbleweed 0.0.20250410T162706-1.1

opensuse advisories openSUSE-SU-2025:14995-1

  • helm CBL-Mariner 2.0 3.14.2-6
  • helm Azure Linux 3.0 3.15.2-3
  • cert-manager Azure Linux 3.0 1.12.15-4
  • cert-manager CBL-Mariner 2.0 1.11.2-23

azure linux advisories AZL-59808AZL-59838AZL-59991AZL-60145

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-32386 updated cvss 6.5

helm.sh/helm/v3: Helm Allows A Specially Crafted Chart Archive To Cause Out Of Memory Termination

  • Red Hat cert-manager Operator for Red Hat OpenShift cert-manager/jetstack-cert-manager-rhel9, cert-manager/jetstack-cert-manager-acmesolver-rhel9 Red Hat Deployment Validation Operator dvo/deployment-validation-rhel8-operator Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-agent-rhel9, multicluster-globalhub/multicluster-globalhub-manager-rhel9, multicluster-globalhub/multicluster-globalhub-rhel9-operator, multicluster-globalhub/multicluster-globalhub-operator-bundle Red Hat OpenShift Service Mesh 2 openshift-service-mesh/pilot-rhel8, openshift-service-mesh/proxyv2-rhel8, openshift-service-mesh/proxyv2-rhel9, openshift-service-mesh/istio-cni-rhel8 Red Hat OpenShift Service Mesh 3 openshift-service-mesh/istio-proxyv2-rhel9, openshift-service-mesh/istio-rhel9-operator, openshift-service-mesh/istio-must-gather-rhel9 Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/acm-search-v2-rhel9, rhacm2/multiclusterhub-rhel9, rhacm2/multicloud-integrations-rhel9, rhacm2/acm-volsync-addon-controller-rhel9, rhacm2/multicluster-operators-channel-rhel9, rhacm2/multicluster-operators-subscription-rhel9, +2 more
    +4 more products
    Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-roxctl-rhel8, advanced-cluster-security/rhacs-rhel8-operator, advanced-cluster-security/rhacs-central-db-rhel8, advanced-cluster-security/rhacs-scanner-v4-rhel8, advanced-cluster-security/rhacs-scanner-v4-db-rhel8 Red Hat Developer Hub 1 rhdh-orchestrator-dev-preview-beta/controller-rhel9-operator Red Hat OpenShift AI (RHOAI) rhoai/odh-kueue-controller-rhel8 Red Hat Trusted Application Pipeline rhtap-cli/rhtap-cli-rhel9
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
go helm.sh/helm/v3
<3.17.3
3.17.3
bitnami helm
<3.17.3
3.17.3

Affected products

  • helm helm

Classification

Weakness
  • CWE-789 Memory Allocation with Excessive Size Value
  • CWE-770 Allocation of Resources Without Limits or Throttling

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.