CVE-2026-27878
Last modified
CVE-2026-27878 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
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/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Grafana | Tempo | >= 2.6.0, < 2.8.4 |
| Grafana | Tempo | >= 2.9.0, < 2.9.2 |
| Grafana | Tempo | >= 2.10.0, < 2.10.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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