CVE-2026-44247: CWE-400: Uncontrolled Resource Consumption in volcano-sh volcano
Volcano, a Kubernetes-native batch scheduling system, has a vulnerability in its webhook server prior to versions 1. 14. 2, 1. 13. 3, and 1. 12. 4. The webhook server does not enforce limits on the size of incoming HTTP request bodies, allowing any in-cluster pod with access to send arbitrarily large requests. This can lead to uncontrolled resource consumption, causing the webhook server to be killed by out-of-memory (OOM) conditions. The issue affects all Volcano deployments exposing the webhook server to in-cluster traffic.
AI Analysis
Technical Summary
CVE-2026-44247 is an uncontrolled resource consumption vulnerability (CWE-400) in the Volcano webhook server component. Prior to fixed versions 1.14.2, 1.13.3, and 1.12.4, the webhook server does not limit the size of HTTP request bodies it accepts. This allows any pod within the Kubernetes cluster that can reach the webhook endpoint to send very large requests, potentially exhausting memory resources and causing the webhook server process to be terminated due to out-of-memory conditions. This vulnerability impacts all Volcano deployments with the webhook server exposed to in-cluster traffic. The issue is resolved by upgrading to the fixed versions.
Potential Impact
The vulnerability can cause denial of service by crashing the Volcano webhook server due to out-of-memory conditions triggered by large HTTP request bodies. There is no impact on confidentiality or integrity reported. The CVSS v3.1 score is 6.8 (medium severity), reflecting a network attack vector with low complexity and no user interaction required, but requiring low privileges within the cluster. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available by upgrading Volcano to version 1.14.2, 1.13.3, or 1.12.4 or later. Since the vendor advisory confirms these versions contain the fix, upgrading to one of these versions is the recommended remediation. If immediate upgrade is not possible, restricting which pods can access the webhook server endpoint may reduce exposure, but the primary mitigation is to apply the official fix.
CVE-2026-44247: CWE-400: Uncontrolled Resource Consumption in volcano-sh volcano
Description
Volcano, a Kubernetes-native batch scheduling system, has a vulnerability in its webhook server prior to versions 1. 14. 2, 1. 13. 3, and 1. 12. 4. The webhook server does not enforce limits on the size of incoming HTTP request bodies, allowing any in-cluster pod with access to send arbitrarily large requests. This can lead to uncontrolled resource consumption, causing the webhook server to be killed by out-of-memory (OOM) conditions. The issue affects all Volcano deployments exposing the webhook server to in-cluster traffic.
CVSS v3.1
Score 6.8medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-44247 is an uncontrolled resource consumption vulnerability (CWE-400) in the Volcano webhook server component. Prior to fixed versions 1.14.2, 1.13.3, and 1.12.4, the webhook server does not limit the size of HTTP request bodies it accepts. This allows any pod within the Kubernetes cluster that can reach the webhook endpoint to send very large requests, potentially exhausting memory resources and causing the webhook server process to be terminated due to out-of-memory conditions. This vulnerability impacts all Volcano deployments with the webhook server exposed to in-cluster traffic. The issue is resolved by upgrading to the fixed versions.
Potential Impact
The vulnerability can cause denial of service by crashing the Volcano webhook server due to out-of-memory conditions triggered by large HTTP request bodies. There is no impact on confidentiality or integrity reported. The CVSS v3.1 score is 6.8 (medium severity), reflecting a network attack vector with low complexity and no user interaction required, but requiring low privileges within the cluster. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available by upgrading Volcano to version 1.14.2, 1.13.3, or 1.12.4 or later. Since the vendor advisory confirms these versions contain the fix, upgrading to one of these versions is the recommended remediation. If immediate upgrade is not possible, restricting which pods can access the webhook server endpoint may reduce exposure, but the primary mitigation is to apply the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-05T16:33:55.844Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a189d28e29bf47b50227b07
Added to database: 5/28/2026, 7:53:12 PM
Last enriched: 5/28/2026, 8:03:54 PM
Last updated: 5/28/2026, 9:12:39 PM
Views: 3
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