CVE-2026-28377
Title: Grafana Tempo S3 SSE-C key exposure
Other
Proof Of Concept
No public PoC currently indexed for CVE-2026-28377.
CWE Category
NVD-CWE-noinfo
Published Date
Mar 26, 2026
Modified Date
Mar 31, 2026
Exploit Status
Not Found
Score
7.5
CVSS v3.1
Exploit Probability (EPSS)
0.16%
Vulnerability Summary
CVE-2026-28377: 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.
Impacted Vendors
Reference Links
CVSS v3.1
Source Entity
[email protected]
Severity
HIGH
7.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Associated Attack Patterns (CAPEC)
Total: PatternsNo specific attack patterns mapped.
Likelihood
Severity
Page /
CVE-2026-28377 Exploits & PoCs (Proof Of Concept)
No public PoCs found in our database for this CVE.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
Attack Vector Matrix
Access Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
CVSS Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Stack
No specific products linked.