{"id":"CVE-2026-28377","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.\n\nThanks to william_goodfellow for reporting this vulnerability.","aliases":["GHSA-ffqx-q65f-36jf","GO-2026-5359"],"modified":"2026-07-01T12:14:12.612689608Z","published":"2026-03-26T21:39:46.928Z","related":["openSUSE-SU-2026:10390-1"],"database_specific":{"cna_assigner":"GRAFANA","unresolved_ranges":[{"extracted_events":[{"last_affected":"2.10.3"}],"source":"AFFECTED_FIELD"}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28377.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28377.json"},{"type":"ADVISORY","url":"https://grafana.com/security/security-advisories/cve-2026-28377"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28377"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/grafana/tempo","events":[{"introduced":"0"},{"fixed":"4aeafc237b8d9a8d62e45735131e8a89eb741a00"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.10.3"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*"}}],"versions":["v2.10.2","v2.10.1","v2.10.0","v2.10.0-rc.0","v2.9.0-rc.0","v2.7.0-rc.0","v2.6.0-rc.0","v2.5.0-rc.1","v2.5.0-rc.0","v2.4.0","v2.4.0-rc.0","v2.3.0-rc.0","v2.2.0-rc.0","v2.1.0-rc.0","v2.0.0","v2.0.0-rc.0","v1.5.0","v1.5.0-rc.2","v1.5.0-rc.1","v1.5.0-rc.0","v1.4.0","v1.4.0-rc.0","v1.3.0","v1.3.0-rc.0","v1.2.0","v1.2.0-rc.1","v1.2.0-rc.0","v1.1.0","v1.1.0-rc.1","v1.1.0-rc.0","v1.0.0","v1.0.0-rc.0","v0.7.0","v0.6.0","v0.5.0","v0.4.0","v0.3.0","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-28377.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}