Vulnerability in Grafana Enterprise Traces (Get)
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 s…
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Grafana Enterprise Traces (Get) — versions 2.6.1
- Grafana Tempo — versions 2.6.0
References
- security@grafana.com (vendor-advisory)
Frequently asked questions
- What is CVE-2026-27878?
- CVE-2026-27878 is a medium-severity vulnerability in Grafana Enterprise Traces (Get). CVSS score: 6.5/10. Published 2026-06-19.
- How severe is CVE-2026-27878?
- Medium severity. CVSS v3 base score is 6.5 out of 10.