{"id":"CVE-2026-21728","revision":"488e57c12a574e4083ed13195a0eff6f","records":[{"revision":"488e57c12a574e4083ed13195a0eff6f","observedAt":"2026-10-25T05:17:32.026+00:00","statement":{"source":"nvd","id":"CVE-2026-21728","aliases":[],"title":"Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.","description":"Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.\n\nMitigation can be done by setting max_result_limit in the search config, e.g. to 262144 (2^18). Alternatively, automatically restart the service.","state":0,"publishedAt":"2026-04-24T09:16:03.71+00:00","modifiedAt":"2026-09-09T13:18:44.397+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security@grafana.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"},{"system":"CVSS 3.1 · 0b0ca135-0b70-47e7-9f44-1890c2a1c46c · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://grafana.com/security/security-advisories/cve-2026-21728","https://access.redhat.com/errata/RHSA-2026:21769","https://access.redhat.com/errata/RHSA-2026:22347","https://access.redhat.com/errata/RHSA-2026:22423","https://access.redhat.com/errata/RHSA-2026:23345","https://access.redhat.com/errata/RHSA-2026:24503","https://access.redhat.com/security/cve/CVE-2026-21728","https://bugzilla.redhat.com/show_bug.cgi?id=2461395","https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-21728.json"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-21728","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Modified","weaknesses":["CWE-400","CWE-770"],"productCriteria":["cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-04-24T09:16:03.710","lastModified":"2026-09-09T13:18:44.397"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-21728","identifiers":["CVE-2026-21728"]},"retained":false,"historicalAffected":[]}],"coverage":[]}