{"id":"CVE-2026-28377","state":"PUBLISHED","title":"S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)","description":"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.","publishedAt":"2026-03-26T21:39:46.928Z","updatedAt":"2026-08-27T17:22:34.956Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GRAFANA"},"assigner":"GRAFANA","products":["Grafana Tempo"],"affected":[{"vendor":"Grafana","product":"Tempo","defaultStatus":"unaffected","versions":[{"version":"2.10.3","status":"affected","versionType":"semver"}]}],"references":["https://grafana.com/security/security-advisories/cve-2026-28377"],"weaknesses":["CWE-326"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28377.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28377","state":"PUBLISHED","datePublished":"2026-03-26T21:39:46.928Z","dateUpdated":"2026-08-27T17:22:34.956Z","assignerShortName":"GRAFANA","assignerOrgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateReserved":"2026-02-27T07:16:12.218Z"},"containers":{"cna":{"title":"S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Grafana","product":"Tempo","defaultStatus":"unaffected","versions":[{"version":"2.10.3","status":"affected","versionType":"semver"}]}],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-28377","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}}],"providerMetadata":{"shortName":"GRAFANA","orgId":"57da9224-a3e2-4646-9d0e-c4dc2e05e7da","dateUpdated":"2026-08-27T17:22:34.956Z"},"datePublic":"2026-03-26T21:34:51.017Z","source":{"discovery":"BUG_BOUNTY"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-27T13:29:52.402572Z","id":"CVE-2026-28377","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-326","type":"CWE","lang":"en","description":"CWE-326 Inadequate Encryption Strength"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-27T13:54:56.438Z"}}]}}}