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CVE-2026-44247— Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size

Quick assessment

Affected
volcano-sh volcano
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Volcano是Volcano开源的一个基于 Kubernetes 构建的批处理系统。 Volcano v1.14.2之前版本、v1.13.3之前版本和v1.12.4之前版本存在安全漏洞，该漏洞源于Webhook服务器未对传入HTTP请求体大小设置限制，集群内可访问Webhook端点的Pod可能发送任意大的请求体，导致Webhook服务器因内存耗尽被终止。

CVSS 6.8 · Medium EPSS 0.17% · P7

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 3

VendorProduct Version RangeStatus
volcano-sh volcano >= 1.14.0-alpha.0, < 1.14.2 affected
>= 1.13.0, < 1.13.3 affected
< 1.12.4 affected
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I. Basic Information for CVE-2026-44247

Vulnerability Information
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Vulnerability Title
Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size
Source: CVE Program / CVE List V5
Vulnerability Description
Volcano is a Kubernetes-native batch scheduling system. Prior to v1.14.2, v1.13.3, and v1.12.4, the Volcano webhook server does not enforce a size limit on incoming HTTP request bodies. Any in-cluster pod that can reach the webhook endpoint may send an arbitrarily large request body, potentially causing the webhook server to be killed by OOM. All Volcano deployments with the webhook server exposed to in-cluster traffic are affected. This vulnerability is fixed in v1.14.2, v1.13.3, and v1.12.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Volcano 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Volcano是Volcano开源的一个基于 Kubernetes 构建的批处理系统。 Volcano v1.14.2之前版本、v1.13.3之前版本和v1.12.4之前版本存在安全漏洞，该漏洞源于Webhook服务器未对传入HTTP请求体大小设置限制，集群内可访问Webhook端点的Pod可能发送任意大的请求体，导致Webhook服务器因内存耗尽被终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
volcano-sh volcano >= 1.14.0-alpha.0, < 1.14.2 -

II. Public POCs for CVE-2026-44247

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III. Intelligence Information for CVE-2026-44247

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Vendor Advisories for CVE-2026-44247 (1)

IV. Related Vulnerabilities

Same product: volcano
Same vendor: volcano-sh
Same weakness: CWE-400

V. Comments for CVE-2026-44247

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