CVE-2026-28377
S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)
- State
- Published
- Severity
- 7.5 High
- Published
- Mar 26, 2026
- Updated
- Aug 27, 2026
- Reserved
- Feb 27, 2026
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.
Thanks to william_goodfellow for reporting this vulnerability.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | GRAFANA |
Weaknesses
- CWE-326 Inadequate Encryption Strength
Affected Products
| Product | Versions |
|---|---|
TempoGrafana |
|
References
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