{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.19.13"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.2.7"
              },
              {
                "introduced": "9.3.0"
              },
              {
                "fixed": "9.3.2"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "1b6a7ece17463df5ff54a3e1302d825889aa1161"
            },
            {
              "fixed": "f6279a2167a248af2bb287409231fb0cf52aa0db"
            },
            {
              "introduced": "112859b85d50de2a7e63f73c8fc70b99eea24291"
            },
            {
              "fixed": "39e49969374b9cb20b84dc00f7d505d67480deeb"
            },
            {
              "introduced": "17b451d8979a29e31935fe1eb901310350b30e62"
            },
            {
              "fixed": "43a703737aab6baefa748bc7b69e4054926f2b2c"
            }
          ],
          "repo": "https://github.com/elastic/elasticsearch",
          "type": "GIT"
        }
      ]
    },
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "8.0.0"
              },
              {
                "fixed": "8.19.13"
              },
              {
                "introduced": "9.0.0"
              },
              {
                "fixed": "9.2.7"
              },
              {
                "introduced": "9.3.0"
              },
              {
                "fixed": "9.3.2"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "57ca5e139a33dd2eed927ce98d8231a1f217cd15"
            },
            {
              "fixed": "2cc8a9176084bc48abad7a65cc3a3f5961c8d9cb"
            },
            {
              "introduced": "504d6bfa94cca17fabb76e06152c30c4f0c3efdd"
            },
            {
              "fixed": "6bff11df59c8077810f373e3f4e2f2499ec906a9"
            },
            {
              "introduced": "30ab63cc0017fe2da7a84fb9b285dd762468802d"
            },
            {
              "fixed": "80a75d1ae44e8a67f79adf9709bba3075d85afc7"
            }
          ],
          "repo": "https://github.com/elastic/kibana",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "elastic",
    "cwe_ids": [
      "CWE-1284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26940.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "introduced": "9.3.0"
          },
          {
            "last_affected": "9.3.1"
          },
          {
            "introduced": "9.0.0"
          },
          {
            "last_affected": "9.2.6"
          },
          {
            "introduced": "8.0.0"
          },
          {
            "last_affected": "8.19.12"
          }
        ],
        "source": "AFFECTED_FIELD"
      }
    ]
  },
  "details": "Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value.",
  "id": "CVE-2026-26940",
  "modified": "2026-07-15T01:48:59.858112218Z",
  "published": "2026-03-19T17:14:31.734Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/kibana-8-19-13-9-2-7-9-3-2-security-update-esa-2026-20/385535"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26940.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26940"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service"
}