CVE-2026-28377

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Source
https://cve.org/CVERecord?id=CVE-2026-28377
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-28377.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-28377
Aliases
Downstream
Related
Published
2026-03-26T21:39:46.928Z
Modified
2026-07-01T12:14:12.612689608Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)
Details

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.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "last_affected": "2.10.3"
                }
            ]
        }
    ],
    "cna_assigner": "GRAFANA",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28377.json"
}
References

Affected packages

Git / github.com/grafana/tempo

Affected ranges

Type
GIT
Repo
https://github.com/grafana/tempo
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
4aeafc237b8d9a8d62e45735131e8a89eb741a00
Database specific 
{
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.10.3"
        }
    ],
    "cpe": "cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*"
}

Affected versions

v0.*
v0.2.0
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0
v1.*
v1.0.0
v1.0.0-rc.0
v1.1.0
v1.1.0-rc.0
v1.1.0-rc.1
v1.2.0
v1.2.0-rc.0
v1.2.0-rc.1
v1.3.0
v1.3.0-rc.0
v1.4.0
v1.4.0-rc.0
v1.5.0
v1.5.0-rc.0
v1.5.0-rc.1
v1.5.0-rc.2
v2.*
v2.0.0
v2.0.0-rc.0
v2.1.0-rc.0
v2.10.0
v2.10.0-rc.0
v2.10.1
v2.10.2
v2.2.0-rc.0
v2.3.0-rc.0
v2.4.0
v2.4.0-rc.0
v2.5.0-rc.0
v2.5.0-rc.1
v2.6.0-rc.0
v2.7.0-rc.0
v2.9.0-rc.0

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-28377.json"