Helm up to 3.18.4 JSON Schema File /dev/zero ref allocation of resources

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Helm up to 3.18.4. It has been declared as problematic. The impacted element is an unknown function of the file /dev/zero of the component JSON Schema File Handler. Executing a manipulation of the argument ref can lead to allocation of resources. The identification of this vulnerability is CVE-2025-55199. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Helm up to 3.18.4. It has been declared as problematic. This vulnerability affects some unknown processing of the file /dev/zero of the component JSON Schema File Handler. The manipulation of the argument ref with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

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 advisory is available at github.com. This vulnerability was named CVE-2025-55199 since 08/08/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 307885 (SUSE SLES15 Security Update : helm (SUSE-SU-2026:1483-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.18.5 eliminates this vulnerability. Applying the patch b78692c18f0fb38fe5ba4571a674de067a4c53a5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (307885) and CERT Bund (WID-SEC-2025-2727). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Red Hat OpenShift

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Allocation of resources
CWE: CWE-770 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 307885
Nessus Name: SUSE SLES15 Security Update : helm (SUSE-SU-2026:1483-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Helm 3.18.5
Patch: b78692c18f0fb38fe5ba4571a674de067a4c53a5

Timelineinfo

08/08/2025 🔍
08/14/2025 +6 days 🔍
08/14/2025 +0 days 🔍
04/21/2026 +250 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-9h84-qmv7-982p
Status: Confirmed

CVE: CVE-2025-55199 (🔍)
GCVE (CVE): GCVE-0-2025-55199
GCVE (VulDB): GCVE-100-320074
CERT Bund: WID-SEC-2025-2727 - Red Hat OpenShift Container Platform: Mehrere Schwachstellen ermöglichen Denial of Service

Entryinfo

Created: 08/14/2025 07:38
Updated: 04/21/2026 19:17
Changes: 08/14/2025 07:38 (67), 08/15/2025 02:29 (1), 12/03/2025 16:06 (7), 04/21/2026 19:17 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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