Bug 2461395 (CVE-2026-21728) - CVE-2026-21728 grafana/tempo: Tempo: Denial of Service via large queries
Summary: CVE-2026-21728 grafana/tempo: Tempo: Denial of Service via large queries
Keywords:
Status: NEW
Alias: CVE-2026-21728
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-24 09:01 UTC by OSIDB Bzimport
Modified: 2026-04-30 15:01 UTC (History)
22 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
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Description OSIDB Bzimport 2026-04-24 09:01:21 UTC
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).


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