grafana/tempo · Security
Grafana Tempo has Inadequate Encryption Strength
- GHSA ID
- GHSA-ffqx-q65f-36jf
- CVE ID
- CVE-2026-28377
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
A vulnerability in Grafana Tempo exposes the S3 SSE-C encryption key in plaintext through the /status/config endpoint, potentially allowing unauthorized users to obtain the key used to encrypt trace data stored in S3.
CWEs
- CWE-326 · Inadequate Encryption Strength
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-28377 ↗
- https://grafana.com/security/security-advisories/cve-2026-28377 ↗
- https://github.com/grafana/tempo/commit/bb8ca663db34a0980c9758b40d918fda3b4dbec3 ↗
- https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/CHANGELOG.md?plain=1#L135 ↗
- https://github.com/advisories/GHSA-ffqx-q65f-36jf ↗