VULNERABILITY INTELLIGENCE

CVE-2026-28377

CVSS score7.5 HIGH
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-03-26
Last modified2026-06-17
CVSS vectorCVSS: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. Thanks to william_goodfellow for reporting this vulnerability.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-326

Primary references