TI-2026-32224 Aliases CVE-2026-44247 GHSA-8wxp-xxp2-rcgx

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

LOW 32CWE-400Published 2026-05-27 · Updated 2026-05-30

Key facts

Attack vector: Adjacent network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00173 6th percentileScored 2026-11-07

Fix Fixed volcano (volcano-sh): 1.14.2, 1.13.3, 1.12.4volcano.sh/volcano (Go): 1.12.4, 1.13.3, 1.14.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
volcano-sh	volcano	1.14.0-alpha.0 to before 1.14.2; 1.13.0 to before 1.13.3; before 1.12.4	1.14.2, 1.13.3, 1.12.4	Patch available	CNA
—	volcano.sh/volcano (Go)	before 1.12.4	1.12.4	Patch available	GHSA-8wxp-xxp2-rcgx
—	volcano.sh/volcano (Go)	1.13.0 to before 1.13.3	1.13.3	Patch available	GHSA-8wxp-xxp2-rcgx
—	volcano.sh/volcano (Go)	1.14.0 to before 1.14.2	1.14.2	Patch available	GHSA-8wxp-xxp2-rcgx

volcano Vendorvolcano-sh Affected 1.14.0-alpha.0 to before 1.14.2; 1.13.0 to before 1.13.3; before 1.12.4 Fixed in 1.14.2, 1.13.3, 1.12.4 Patch available CNA
volcano.sh/volcano (Go) Vendor— Affected before 1.12.4 Fixed in 1.12.4 Patch available GHSA-8wxp-xxp2-rcgx
volcano.sh/volcano (Go) Vendor— Affected 1.13.0 to before 1.13.3 Fixed in 1.13.3 Patch available GHSA-8wxp-xxp2-rcgx
volcano.sh/volcano (Go) Vendor— Affected 1.14.0 to before 1.14.2 Fixed in 1.14.2 Patch available GHSA-8wxp-xxp2-rcgx

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:linuxfoundation:volcano::::::kubernetes::*	before 1.12.4; 1.13.0 to before 1.13.3; 1.14.0 to before 1.14.2	Vulnerable	backstage

cpe:2.3:a:linuxfoundation:volcano:*:*:*:*:*:kubernetes:*:* Versions before 1.12.4; 1.13.0 to before 1.13.3; 1.14.0 to before 1.14.2 Vulnerable ·backstage

Remediation

Fix · CNA volcano (volcano-sh) Fixed in 1.14.2, 1.13.3, 1.12.4
Fix · GHSA-8wxp-xxp2-rcgx volcano.sh/volcano (Go) Fixed in 1.12.4 Advisory →
Fix · GHSA-8wxp-xxp2-rcgx volcano.sh/volcano (Go) Fixed in 1.13.3 Advisory →
Fix · GHSA-8wxp-xxp2-rcgx volcano.sh/volcano (Go) Fixed in 1.14.2 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-44247
2026-10-03 Alias added: GHSA-8wxp-xxp2-rcgx

References

Advisory 2

Other 1

https://github.com/volcano-sh/volcano

TI-2025-23814 Volcano Scheduler Denial of Service via Unbounded Response from Elastic Service/extender Plugin CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences