GitHub Advisoryadvisory · Go
GHSA-ffqx-q65f-36jf Grafana Tempo has Inadequate Encryption Strength
HIGH
Official page ↗
- Aliases
- CVE-2026-28377
- Ecosystem
- Go
- Packages
- github.com/grafana/tempo
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-326
- Reviewed
- 2026-05-07
Affected packages
• Go github.com/grafana/tempo: < 2.10.3 → fixed in 2.10.3
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.
Related
Alias · CVE (1)
- CVE-2026-28377 A vulnerability in Grafana Tempo exposes the S3 SSE-C encryption key in plaintext through the /status/config endpoint, potentially allowing… vulnerability
Weakness · CWE (1)
- CWE-326 Inadequate Encryption Strength weakness
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-28377 advisory
- https://github.com/grafana/tempo/commit/bb8ca663db34a0980c9758b40d918fda3b4dbec3 web
- https://github.com/advisories/GHSA-ffqx-q65f-36jf advisory
- https://github.com/grafana/tempo package
- https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/CHANGELOG.md?plain=1#L135 web
- https://grafana.com/security/security-advisories/cve-2026-28377 web