CVE-2026-44247

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

HIGH

7.4

CVSS Score

Published: May 27, 2026 at 08:56 PM UTC

Updated: June 17, 2026 at 10:50 AM UTC

2 products affected across 2 vendorsVolcanoVolcano

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Severity

HIGH7.4

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Volcano · Linuxfoundation

95%

v < 1.12.41.13.0 ≤ v < 1.13.31.14.0 ≤ v < 1.14.2

Affected range stops below 1.12.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.13.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.14.2, so it looks safe — our inference, not a vendor statement

Volcano · Volcano Sh

60%

v < 1.12.4v < 1.13.3v < 1.14.2

Affected range stops below 1.12.4, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.13.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.14.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

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

References (1)

x_refsource_CONFIRMVendor Advisory

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGH[email protected]

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: CHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-400CWE-770

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