CVE-2026-44247: Volcano.sh/volcano Volcano's Webhook Server Vulnerable To Vulnerability

MODERATE
Advisory Identifier: GHSA-8wxp-xxp2-rcgx
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CVSS 6.8
CWE-400 CWE-770
Published
Advisory Summary

CVE-2026-44247 is a MODERATE (CVSS 6.8) volcano's webhook server vulnerable to vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Volcano.sh/volcano libraries in the Go ecosystem. The issue involves volcano's webhook server vulnerable to oom due to unbounded http request body size. Remediation is available by upgrading affected packages to version 1.12.4, 1.13.3, 1.14.2.

CVE-2026-44247 at a Glance

CVE Identifier CVE-2026-44247
GHSA Identifier GHSA-8wxp-xxp2-rcgx
Severity MODERATE
CVSS v3.1 Base Score 6.8
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Volcano.sh/volcano
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H).

Attack Vector Adjacent (AV:A)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-44247

To remediate this vulnerability, upgrade all affected Volcano.sh/volcano dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

volcano.sh/volcano fixed: 1.12.4 
Upgrade volcano.sh/volcano to 1.12.4
volcano.sh/volcano fixed: 1.13.3 
Upgrade volcano.sh/volcano to 1.13.3
volcano.sh/volcano fixed: 1.14.2 
Upgrade volcano.sh/volcano to 1.14.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for volcano.sh/volcano

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-44247, inspect your project dependencies for Volcano.sh/volcano:

inspect dependencies for volcano.sh/volcano

Analyze the terminal output to locate any version of Volcano.sh/volcano in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.12.4), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Volcano.sh/volcano, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact 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. ### Patches This issue will be fixed in the following versions: - v1.14.2 - v1.13.3 - v1.12.4 Users running versions below these should upgrade accordingly. ### Workarounds No known workarounds. Upgrade to the patched versions listed above.

CVE-2026-44247 Affected Volcano.sh/volcano Versions

3 component(s)
Fixed Versions:
1.12.41.13.31.14.2
Product / Package Ecosystem Affected Versions Fixed Version
volcano.sh/volcano
golang/volcano.sh/volcano
Go
< 1.12.4
1.12.4
volcano.sh/volcano
golang/volcano.sh/volcano
Go
≥ 1.13.0
< 1.13.3
1.13.3
volcano.sh/volcano
golang/volcano.sh/volcano
Go
≥ 1.14.0
< 1.14.2
1.14.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx
NVD — CVE-2026-44247 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44247
Volcano.sh/volcano Source Repository REPOSITORY
https://github.com/volcano-sh/volcano

Frequently Asked Questions

What is CVE-2026-44247?
CVE-2026-44247 is a security vulnerability in Volcano.sh/volcano involving Volcano's webhook server vulnerable to OOM due to unbounded HTTP request body size under CWE-400: Uncontrolled Resource Consumption.
Which Volcano.sh/volcano versions are affected?
Affected versions include releases prior to 1.12.4, 1.13.3, 1.14.2 across affected packages: volcano.sh/volcano.
What version fixes CVE-2026-44247?
Upgrading to 1.12.4, 1.13.3, 1.14.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is volcano.sh/volcano affected?
Yes, volcano.sh/volcano is affected in releases prior to 1.12.4, 1.13.3, 1.14.2. Upgrade your dependency to 1.12.4, 1.13.3, 1.14.2 or later.
What is the CVSS score of CVE-2026-44247?
CVE-2026-44247 has a CVSS v3.1 base score of 6.8 (MODERATE) with vector string CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
What CWE is associated with CVE-2026-44247?
CVE-2026-44247 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2026-44247?
Run the dependency tree command: 'inspect dependencies for volcano.sh/volcano'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8wxp-xxp2-rcgx",
  "modified" : "2026-06-08T23:54:51Z",
  "published" : "2026-05-08T20:44:54Z",
  "aliases" : [ "CVE-2026-44247" ],
  "summary" : "Volcano's webhook server vulnerable to OOM due to unbounded HTTP request body size",
  "details" : "### Impact\nThe 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.\n\n### Patches\nThis issue will be fixed in the following versions:\n- v1.14.2\n- v1.13.3\n- v1.12.4\n\nUsers running versions below these should upgrade accordingly.\n\n### Workarounds\nNo known workarounds. Upgrade to the patched versions listed above.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "volcano.sh/volcano"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.12.4"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "volcano.sh/volcano"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.13.0"
      }, {
        "fixed" : "1.13.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "volcano.sh/volcano"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.14.0"
      }, {
        "fixed" : "1.14.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-44247"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/volcano-sh/volcano"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400", "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-08T20:44:54Z",
    "nvd_published_at" : "2026-05-27T22:16:35Z"
  }
}