{"id":"GHSA-p4r4-xvrq-gvmc","summary":"Grafana Tempo has an Uncontrolled Resource Consumption issue","details":"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).","aliases":["CVE-2026-21728","GO-2026-5528"],"modified":"2026-07-17T21:06:51.833440328Z","published":"2026-04-24T09:30:30Z","database_specific":{"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-05-05T00:24:31Z","nvd_published_at":"2026-04-24T09:16:03Z","cwe_ids":["CWE-400"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21728"},{"type":"WEB","url":"https://github.com/grafana/tempo/pull/6525"},{"type":"WEB","url":"https://github.com/grafana/tempo/commit/650eb1985a0776789c8564122990f588a742356f"},{"type":"PACKAGE","url":"https://github.com/grafana/tempo"},{"type":"WEB","url":"https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-10.md?plain=1#L328"},{"type":"WEB","url":"https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-8.md?plain=1#L251"},{"type":"WEB","url":"https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-9.md?plain=1#L224"},{"type":"WEB","url":"https://grafana.com/security/security-advisories/cve-2026-21728"}],"affected":[{"package":{"name":"github.com/grafana/tempo","ecosystem":"Go","purl":"pkg:golang/github.com/grafana/tempo"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.3.0"},{"fixed":"2.8.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p4r4-xvrq-gvmc/GHSA-p4r4-xvrq-gvmc.json"}},{"package":{"name":"github.com/grafana/tempo","ecosystem":"Go","purl":"pkg:golang/github.com/grafana/tempo"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.9.0"},{"fixed":"2.9.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p4r4-xvrq-gvmc/GHSA-p4r4-xvrq-gvmc.json"}},{"package":{"name":"github.com/grafana/tempo","ecosystem":"Go","purl":"pkg:golang/github.com/grafana/tempo"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.10.0"},{"fixed":"2.10.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p4r4-xvrq-gvmc/GHSA-p4r4-xvrq-gvmc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}