CVE-2026-44247

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

State: Published
Severity: 6.8 Medium
Published: May 27, 2026
Updated: May 30, 2026
Reserved: May 5, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	6.8 Medium	CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption
CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
volcanovolcano-sh	>= 1.14.0-alpha.0, < 1.14.2Affected >= 1.13.0, < 1.13.3Affected < 1.12.4Affected

References

https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx

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