CVE-2026-21728
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.
Published:Apr 24, 2026
Last Modified:Jul 13, 2026
EPS:Apr 24, 2026
EPSS Score:0.00645
CVSS Score:7.5
Affected Products
Vendor
Product
Action
Vendor
Grafana
Product
Tempo
Grafana
Tempo
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
References
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
