Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service

{
  "id": "57467bd2bd6f5f5820cd4ee2ec3320cae0fba9814fafb32287e49900b2b27ec8",
  "url": "https://osv.dev/vulnerability/CVE-2026-26931",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service",
    "summary": "Memory Allocation with Excessive Size Value (CWE-789) in the Prometheus remote_write HTTP handler in Metricbeat can lead Denial of Service via Excessive Allocation (CAPEC-130).",
    "evidence": "osv:CVE-2026-26931",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-26931",
      "aliases": [
        "CVE-2026-26931",
        "GHSA-5vrw-qjxw-89r5",
        "GO-2026-4790"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/elastic/beats",
              "type": "GIT",
              "events": [
                {
                  "introduced": "2ab3a7334016f570e0bfc7e9a577a35a22e02df5"
                },
                {
                  "fixed": "772e25e87cbdcaac9aca33e72af74e5ee8e1220a"
                },
                {
                  "introduced": "42a721c925857c0d1f4160c977eb5f188e46d425"
                },
                {
                  "fixed": "090edf6777335b72756841fc32203573a0cc1073"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:elastic:metricbeat:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "8.0.0"
                      },
                      {
                        "fixed": "8.19.13"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:elastic:metricbeat:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0.0"
                      },
                      {
                        "fixed": "9.2.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26931.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:28.194112993Z",
      "provider": "osv",
      "references": [
        "https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-security-update-esa-2026-09/385532",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26931.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-26931"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-789"
        ],
        "cna_assigner": "elastic",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0.0"
                  },
                  {
                    "last_affected": "8.19.12"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26931.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-26931",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494956,
  "published_at": "2026-03-19T17:05:57.514+00:00"
}