In short
- CVE-2026-21728 is a HIGH (CVSS 7.5) vulnerability affecting github.com/grafana/tempo, tempo (grafana).
- Chance of exploitation in the next 30 days (EPSS): 0.64%, higher than 50.5% of all vulnerabilities.
- Fix: update to 2.8.4, 2.10.2, 2.9.2 or later.
| Package | Affected versions | Patched versions |
|---|
| github.com/grafana/tempo Go | ≥ 1.3.0, < 2.8.4≥ 1.3.0≥ 2.10.0, < 2.10.2≥ 2.9.0, < 2.9.2
| 2.8.42.10.22.9.2
|
| tempo | ≥ 1.3.0, < 2.8.4≥ 2.10.0, < 2.10.2≥ 2.9.0, < 2.9.2
| 2.8.42.10.22.9.2
|
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).
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.
More vulnerabilities in github.com/grafana/tempo
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