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NVD Vulnerability Details :
CVE-2026-28377
Analyzed
More InfoOfficial Page
Source-security@grafana.com
View Known Exploited Vulnerability (KEV) details
Published At-26 Mar, 2026 | 22:16
Updated At-31 Mar, 2026 | 19:00

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CPE Matches
Grafana Labs
grafana
>>tempo>>Versions before 2.10.3(exclusive)
cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-326Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-326
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://grafana.com/security/security-advisories/cve-2026-28377security@grafana.com
Vendor Advisory
Hyperlink: https://grafana.com/security/security-advisories/cve-2026-28377
Source: security@grafana.com
Resource:
Vendor Advisory
Change History
0Changes found
Details not found