{"id":"CVE-2026-20166","state":"PUBLISHED","title":"Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise","description":"In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control. \n\nThis vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise.","publishedAt":"2026-03-11T16:18:17.121Z","updatedAt":"2026-03-12T16:19:30.880Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","source":"cisco"},"assigner":"cisco","products":["Splunk Splunk Enterprise","Splunk Splunk Cloud Platform"],"affected":[{"vendor":"Splunk","product":"Splunk Enterprise","versions":[{"version":"10.2","status":"affected","lessThan":"10.2.1","versionType":"custom"},{"version":"10.0","status":"affected","lessThan":"10.0.4","versionType":"custom"}]},{"vendor":"Splunk","product":"Splunk Cloud Platform","versions":[{"version":"10.2.2510","status":"affected","lessThan":"10.2.2510.5","versionType":"custom"},{"version":"10.1.2507","status":"affected","lessThan":"10.1.2507.16","versionType":"custom"},{"version":"10.0.2503","status":"affected","lessThan":"10.0.2503.12","versionType":"custom"}]}],"references":["https://advisory.splunk.com/advisories/SVD-2026-0305"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T20:11:10.572Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/20xxx/CVE-2026-20166.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-20166","state":"PUBLISHED","datePublished":"2026-03-11T16:18:17.121Z","dateUpdated":"2026-03-12T16:19:30.880Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2025-10-08T11:59:15.390Z"},"containers":{"cna":{"title":"Sensitive Information Disclosure in Discover Splunk Observability Cloud app for Splunk Enterprise","descriptions":[{"lang":"en","value":"In Splunk Enterprise versions below 10.2.1 and 10.0.4, and Splunk Cloud Platform versions below 10.2.2510.5, 10.1.2507.16, and 10.0.2503.12, a low-privileged user that does not hold the \"admin\" or \"power\" Splunk roles could retrieve the Observability Cloud API access token through the Discover Splunk Observability Cloud app due to improper access control. \n\nThis vulnerability does not affect Splunk Enterprise versions below 9.4.9 and 9.3.10 because the Discover Splunk Observability Cloud app does not come with Splunk Enterprise."}],"affected":[{"vendor":"Splunk","product":"Splunk Enterprise","versions":[{"version":"10.2","status":"affected","lessThan":"10.2.1","versionType":"custom"},{"version":"10.0","status":"affected","lessThan":"10.0.4","versionType":"custom"}]},{"vendor":"Splunk","product":"Splunk Cloud Platform","versions":[{"version":"10.2.2510","status":"affected","lessThan":"10.2.2510.5","versionType":"custom"},{"version":"10.1.2507","status":"affected","lessThan":"10.1.2507.16","versionType":"custom"},{"version":"10.0.2503","status":"affected","lessThan":"10.0.2503.12","versionType":"custom"}]}],"references":[{"url":"https://advisory.splunk.com/advisories/SVD-2026-0305"}],"metrics":[{"cvssV3_1":{"vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1","baseScore":5.4,"baseSeverity":"MEDIUM"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","lang":"en","type":"cwe","description":"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information."}]}],"providerMetadata":{"shortName":"cisco","orgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateUpdated":"2026-03-11T16:18:17.121Z"},"datePublic":"2026-03-11T00:00:00.000Z","source":{"advisory":"SVD-2026-0305"},"credits":[{"lang":"en","value":"Will Zgoda, Splunk"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-12T15:40:11.819588Z","id":"CVE-2026-20166","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","type":"CWE","lang":"en","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-12T16:19:30.880Z"}}]}}}