CVE-2026-21728
Tempo query limit results in unbounded memory allocation
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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).
| Vendor | grafana |
| Product | tempo |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 24, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Grafana / Tempo
v1.3.0 < v2.11.0