CVE-2026-27878
Medium · 6.5CVSS
6.5
EPSS
0.4%
Published
Jun 19, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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