CVE-2026-21728
Grafana Tempo has an Uncontrolled Resource Consumption issue
7.5
HIGH
CVSS 3.1
EPSS 0.02%
Description
Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy. Mitigation can be done by setting max_result_limit in the search config, e.g. to 262144 (2^18).
How to fix CVE-2026-21728
To remediate CVE-2026-21728, upgrade the affected package to a fixed version below.
- —upgrade to 2.8.4 or later
Is CVE-2026-21728 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 1.3.0, < 2.8.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |