NetSight
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high7.5

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.

Impact

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.

Affected packages

EcosystemPackageAffectedFixed in
gogithub.com/grafana/tempo>= 1.3.0, < 2.8.42.8.4

Affected products

VendorProductAffected versions
GrafanaTempo
from 1.3.0 before 2.8.4
from 2.9.0 before 2.9.2
from 2.10.0 before 2.10.2

Weakness classification

CWE-400CWE-770

References