{"id":"GHSA-ffqx-q65f-36jf","summary":"Grafana Tempo has Inadequate Encryption Strength","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.","aliases":["CVE-2026-28377","GO-2026-5359"],"modified":"2026-07-21T14:15:29.497344350Z","published":"2026-03-27T00:31:20Z","database_specific":{"nvd_published_at":"2026-03-26T22:16:28Z","cwe_ids":["CWE-326"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-05-07T04:07:51Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28377"},{"type":"WEB","url":"https://github.com/grafana/tempo/commit/bb8ca663db34a0980c9758b40d918fda3b4dbec3"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-ffqx-q65f-36jf"},{"type":"PACKAGE","url":"https://github.com/grafana/tempo"},{"type":"WEB","url":"https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/CHANGELOG.md?plain=1#L135"},{"type":"WEB","url":"https://grafana.com/security/security-advisories/cve-2026-28377"}],"affected":[{"package":{"name":"github.com/grafana/tempo","ecosystem":"Go","purl":"pkg:golang/github.com/grafana/tempo"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.10.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-ffqx-q65f-36jf/GHSA-ffqx-q65f-36jf.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}