{
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "cveMetadata": {
    "cveId": "MOKSHA-2026-0058",
    "assignerOrgId": "moksha.dk",
    "x_moksha_note": "Self-issued advisory. MOKSHA-2026-NNNN is not a MITRE CVE ID. Schema follows CVE JSON 5.1 for tooling compatibility. alternateIds contains GCVE cross-references (GNA #117) and will also carry MITRE CVE IDs if assigned.",
    "state": "PUBLISHED",
    "datePublished": "2026-04-24T06:00:00Z",
    "alternateIds": [
      "GCVE-117-2026-0058"
    ],
    "x_moksha_semantic_id": "XSD-4"
  },
  "containers": {
    "cna": {
      "providerMetadata": {
        "orgId": "moksha.dk",
        "shortName": "Moksha",
        "dateUpdated": "2026-04-24T06:00:00Z"
      },
      "title": "Xenstore Quota Exhaustion via VM.xenstore_data",
      "descriptions": [
        {
          "lang": "en",
          "value": "A vm-admin in XAPI-based hypervisors (XenServer, XCP-ng) can exhaust a guest domain's xenstore quota by injecting a large number of vm-data/* keys into VM.xenstore_data. Xenstore enforces a per-domain quota shared with guest agent data. When injected data consumes the quota, the guest's own xenstore operations fail, disrupting PV drivers, network configuration, and guest agent communication. The field has zero map_keys_roles entries and no value length limits."
        }
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM"
          }
        },
        {
          "format": "CVSS",
          "cvssV4_0": {
            "version": "4.0",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM"
          }
        }
      ],
      "affected": [
        {
          "vendor": "Cloud Software Group",
          "product": "XenServer",
          "versions": [
            {
              "status": "affected",
              "version": "all",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Vates",
          "product": "XCP-ng",
          "versions": [
            {
              "status": "affected",
              "version": "all",
              "versionType": "custom"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "lang": "en",
              "description": "Uncontrolled Resource Consumption",
              "cweId": "CWE-400",
              "type": "CWE"
            }
          ]
        }
      ],
      "references": [
        {
          "url": "https://gna.moksha.dk/MOKSHA-2026-0058"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jakob Wolffhechel, Moksha"
        }
      ]
    }
  },
  "x_gcve": [
    {
      "vulnId": "GCVE-117-2026-0058",
      "recordType": "advisory",
      "relationships": [
        {
          "destId": "MOKSHA-2026-0058",
          "type": "equal"
        }
      ]
    }
  ]
}