CVE-2026-21728

high Grafana
CVSS v3 Base Score
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.6%
Exploitation probability in 30 days
Top 52% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: April 24, 2026 (136 days ago)
Last Modified: September 7, 2026
Vendor: Grafana
Source: NVD

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). Alternatively, automatically restart the service.

CWE

CWE-400

Affected Products

grafana tempo

References

🔗 grafana.com 🔗 access.redhat.com 🔗 access.redhat.com 🔗 access.redhat.com 🔗 access.redhat.com