{"id":"CVE-2026-26931","aliases":["GHSA-5vrw-qjxw-89r5","GO-2026-4790"],"url":"https://o3.security/vulnerability/CVE-2026-26931","summary":"Memory Allocation with Excessive Size Value in Metricbeat Leading to Denial of Service","details":"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).","published":"2026-03-19T17:05:57.514Z","modified":"2026-09-11T03:48:46.001611478Z","cvss":{"score":5.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/elastic/beats/v7","fixedVersion":"7.0.0-alpha2.0.20260112100137-de072c4e371e"}],"fix":{"url":"https://github.com/elastic/beats/commit/de072c4e371eafeb2a42d65b9ad513f666e4ffd7","label":"elastic/beats@de072c4"},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/metricbeat-8-19-13-9-2-5-security-update-esa-2026-09/385532"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26931.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26931"},{"type":"WEB","url":"https://github.com/elastic/beats/commit/de072c4e371eafeb2a42d65b9ad513f666e4ffd7"},{"type":"PACKAGE","url":"https://github.com/elastic/beats"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-11T03:48:46.001611478Z"}}