{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "OnPrem",
            "Cloud"
          ],
          "product": "Loki",
          "vendor": "Grafana",
          "versions": [
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              "lessThan": "v3.7.0",
              "status": "affected",
              "version": "v3.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2026-02-23T07:50:28.948Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-16T03:12:07.912Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-21729"
        }
      ],
      "source": {
        "discovery": "INTERNAL_FINDING"
      },
      "title": "Loki detected_fields query limits results in unbounded memory allocation",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-21729",
    "datePublished": "2026-07-16T03:12:07.912Z",
    "dateReserved": "2026-01-05T09:26:06.215Z",
    "dateUpdated": "2026-07-16T03:12:07.912Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-21729\",\"sourceIdentifier\":\"security@grafana.com\",\"published\":\"2026-07-16T04:17:29.260\",\"lastModified\":\"2026-07-16T04:17:29.260\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Loki queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.\"}],\"affected\":[{\"source\":\"security@grafana.com\",\"affectedData\":[{\"vendor\":\"Grafana\",\"product\":\"Loki\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"OnPrem\",\"Cloud\"],\"versions\":[{\"version\":\"v3.0.0\",\"lessThan\":\"v3.7.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@grafana.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}]},\"references\":[{\"url\":\"https://grafana.com/security/security-advisories/cve-2026-21729\",\"source\":\"security@grafana.com\"}]}}"
  }
}