{"id":"CLEANSTART-2026-HR94174","summary":"TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash","details":"Security vulnerability affects the grafana package. A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash.","modified":"2026-10-31T01:01:31.872620893Z","published":"2026-10-30T10:08:17.966695Z","upstream":["CVE-2026-27878"],"database_specific":{},"references":[{"type":"ADVISORY","url":"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-HR94174.json"},{"type":"WEB","url":"https://osv.dev/vulnerability/CVE-2026-27878"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27878"}],"affected":[{"package":{"name":"grafana","ecosystem":"CleanStart","purl":"pkg:apk/cleanstart/grafana"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"13.0.10-r0"}]}],"database_specific":{"source":"https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-HR94174.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}