GHSA-p4r4-xvrq-gvmc
Grafana Tempo has an Uncontrolled Resource Consumption issue
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/grafana/tempo | >= 1.3.0, < 2.8.4 | 2.8.4 |
| Go | github.com/grafana/tempo | >= 2.9.0, < 2.9.2 | 2.9.2 |
| Go | github.com/grafana/tempo | >= 2.10.0, < 2.10.2 | 2.10.2 |
Details
As written in the advisory (Markdown source, shown as plain text).
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).
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-21728
- https://github.com/grafana/tempo/pull/6525
- https://github.com/grafana/tempo/commit/650eb1985a0776789c8564122990f588a742356f
- https://github.com/grafana/tempo
- https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-10.md?plain=1#L…
- https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-8.md?plain=1#L2…
- https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-9.md?plain=1#L2…
- https://grafana.com/security/security-advisories/cve-2026-21728