HIGHCVSS 7.5EPSS 0.2%

CVE-2026-28377

Grafana Tempo has Inadequate Encryption Strength

Published: 2026-03-27
Modified: 2026-07-21
EPSS percentile: 5%
Aliases: GHSA-ffqx-q65f-36jf
Sources: github-advisory

Summary

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.

Affected packages

Ecosystem	Package	Affected versions	Fixed versions
Go	github.com/grafana/tempo	—	2.10.3

Remediation: Upgrade to 2.10.3 or later.

References

https://github.com/advisories/GHSA-ffqx-q65f-36jf

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.