Vulnerability · Published May 27, 2026 · Assigned by GitHub_M
CVE-2026-44247Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size
Medium 6.8
In plain English
A medium-severity uncontrolled resource consumption in volcano from volcano-sh. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | volcano.sh/volcano | 1.12.4, 1.13.3, 1.14.2 | GO-2026-5269 |
| Go | volcano.sh/volcano | 1.12.4 | GHSA-8wxp-xxp2-rcgx |
| Go | volcano.sh/volcano | 1.13.3 | GHSA-8wxp-xxp2-rcgx |
| Go | volcano.sh/volcano | 1.14.2 | GHSA-8wxp-xxp2-rcgx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| volcano-sh | volcano | >= 1.14.0-alpha.0, < 1.14.2>= 1.13.0, < 1.13.3< 1.12.4 |
Weakness: CWE-400, CWE-770 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References
- https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx x_refsource_CONFIRM