Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size

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Summary

CVECVE-2026-44247
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-27 22:16:35 UTC
Updated2026-05-29 15:34:31 UTC
DescriptionVolcano 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.

Risk And Classification

Primary CVSS: v3.1 6.8 MEDIUM from [email protected]

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

EPSS: 0.000230000 probability, percentile 0.068690000 (date 2026-05-28)

Problem Types: CWE-400 | CWE-770 | CWE-400 CWE-400: Uncontrolled Resource Consumption | CWE-770 CWE-770: Allocation of Resources Without Limits or Throttling

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.8MEDIUMCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
3.1CNADECLARED6.8MEDIUMCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Volcano-sh Volcano affected >= 1.14.0-alpha.0, < 1.14.2 Not specified
CNA Volcano-sh Volcano affected >= 1.13.0, < 1.13.3 Not specified
CNA Volcano-sh Volcano affected < 1.12.4 Not specified

References

ReferenceSourceLinkTags
github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx [email protected] github.com
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