CVE-2026-115638

Full vulnerability record from the local CVENow database.

Description

OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb.

Severity

MEDIUM

CVSS score

4.3 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-10-23 04:18:16.180000

Last modified

2026-10-29 17:18:01.463000

View original CVE JSON

{
  "id": "CVE-2026-115638",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-23T04:18:16.180",
  "lastModified": "2026-10-29T17:18:01.463",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenStack Ironic through 39.0.1 allows a denial of service via a configdrive that results in a very large amount of uncompressed data, aka a gzip bomb."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "OpenStack",
          "product": "Ironic",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "30.0.0",
              "lessThanOrEqual": "32.1.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "33.0.0",
              "lessThanOrEqual": "35.1.1",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "36.0.0",
              "lessThanOrEqual": "39.0.1",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-10-26T17:48:19.615590Z",
          "id": "CVE-2026-115638",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-409"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://bugs.launchpad.net/ironic/+bug/2171814",
      "source": "[email protected]"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/10/29/1",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}