CVE-2026-44247CWE-400CWE-770

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

Medium · published May 27, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
18.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.0th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-05-27T20:56Z
EPSS history
Timeline
  • 27 MAY 20:56Z
    Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size
    cvelistv5