Vulnerability-Lookup

GHSA-8WXP-XXP2-RCGX

Vulnerability from github – Published: 2026-05-08 20:44 – Updated: 2026-06-08 23:54

Summary

Volcano's webhook server vulnerable to OOM due to unbounded HTTP request body size

Details

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.

Severity

6.8 (Medium)


                  
                    CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "volcano.sh/volcano"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "volcano.sh/volcano"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.13.0"
            },
            {
              "fixed": "1.13.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Go",
        "name": "volcano.sh/volcano"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.14.0"
            },
            {
              "fixed": "1.14.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44247"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400",
      "CWE-770"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-08T20:44:54Z",
    "nvd_published_at": "2026-05-27T22:16:35Z",
    "severity": "MODERATE"
  },
  "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.",
  "id": "GHSA-8wxp-xxp2-rcgx",
  "modified": "2026-06-08T23:54:51Z",
  "published": "2026-05-08T20:44:54Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Volcano\u0027s webhook server vulnerable to OOM due to unbounded HTTP request body size"
}

CVE-2026-44247 (GCVE-0-2026-44247)

Vulnerability from cvelistv5 – Published: 2026-05-27 20:56 – Updated: 2026-05-30 01:50

Title

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

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.

Severity

6.8 (Medium)


                        
                          CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-30 01:50 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/volcano-sh/volcano/security/ad…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
volcano-sh	volcano	Affected: >= 1.14.0-alpha.0, < 1.14.2 Affected: >= 1.13.0, < 1.13.3 Affected: < 1.12.4

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-44247",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-30T01:50:29.251207Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-30T01:50:43.437Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "volcano",
          "vendor": "volcano-sh",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.14.0-alpha.0, \u003c 1.14.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 1.13.0, \u003c 1.13.3"
            },
            {
              "status": "affected",
              "version": "\u003c 1.12.4"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770: Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T20:56:47.220Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/volcano-sh/volcano/security/advisories/GHSA-8wxp-xxp2-rcgx"
        }
      ],
      "source": {
        "advisory": "GHSA-8wxp-xxp2-rcgx",
        "discovery": "UNKNOWN"
      },
      "title": "Volcano: Webhook server vulnerable to OOM due to unbounded HTTP request body size"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-44247",
    "datePublished": "2026-05-27T20:56:47.220Z",
    "dateReserved": "2026-05-05T16:33:55.844Z",
    "dateUpdated": "2026-05-30T01:50:43.437Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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