Vulnerability Details CVE-2026-27878
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. This could allow an authenticated user to trigger a denial of service against the Tempo service.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 14.3%
CVSS Severity
CVSS v3 Score 6.5