CVE-2026-27878

MediumCVSS 6.5/10Last modified Jun 29, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-400

Affected software

VendorProductVersions
GrafanaEnterprise Traces (GET)>= 2.6.1, < 2.8.8
GrafanaTempo>= 2.6.0, < 2.10.2

References

Timeline

Published
Jun 19, 2026
Last modified
Jun 29, 2026
NVD status
Analyzed

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