Resource exhaustion in Linuxfoundation Volcano
CVE-2026-44247
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (17.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Linuxfoundation Volcano
- Volcano-Sh Volcano — versions >= 1.14.0-alpha.0, < 1.14.2, >= 1.13.0, < 1.13.3, < 1.12.4
Weakness classification (CWE)
References
- github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-44247?
- CVE-2026-44247 is a medium-severity vulnerability in Linuxfoundation Volcano, classified under Uncontrolled Resource Consumption. CVSS score: 6.8/10. Published 2026-05-27.
- How severe is CVE-2026-44247?
- Medium severity. CVSS v3 base score is 6.8 out of 10.