{"schemaVersion":3,"id":"CVE-2026-20166","aliases":[],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2026-03-11T16:18:17.121Z","modified":"2026-03-12T16:19:30.880Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0016,"percentile":0.04712,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0.006000000000000016,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00154},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0016,"percentile":0.04712}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00154,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0016,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0016,"percentile":0.04712}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor","description":"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.","type":"weakness","status":"Draft","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/200.html"}],"affected":[{"vendor":"splunk","product":"splunk","name":"splunk","label":"splunk","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.0, < 10.0.4","noFixRecorded":false,"fixedIn":null},{"text":"10.2.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.0, < 10.0.4 | 10.2.0","eol":{"isEol":false,"eolDate":"2028-01-15T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"10.2","label":"10.2","eolFrom":"2028-01-15T00:00:00.000Z","isLts":false,"isMaintained":true,"latestVersion":"10.2.4"},"product":{"name":"splunk","label":"Splunk","category":"server-app"}},"hubHref":"/vendor/splunk/splunk"},{"vendor":"splunk","product":"splunk_cloud_platform","name":"splunk cloud platform","label":"splunk_cloud_platform","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.0.2503, < 10.0.2503.12","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.1.2507, < 10.1.2507.16","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.2.2510, < 10.2.2510.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.0.2503, < 10.0.2503.12 | ≥ 10.1.2507, < 10.1.2507.16 | ≥ 10.2.2510, < 10.2.2510.5","eol":null,"hubHref":"/vendor/splunk/splunk_cloud_platform"},{"vendor":"splunk","product":"splunk enterprise","name":"Splunk Enterprise","label":"splunk enterprise","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 10.2, < 10.2.1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 10.0, < 10.0.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 10.2, < 10.2.1 | ≥ 10.0, < 10.0.4","eol":null,"hubHref":"/vendor/splunk/splunk_enterprise"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisory.splunk.com/advisories/SVD-2026-0305","label":"advisory.splunk.com/advisories/SVD-2026-0305","hostname":"advisory.splunk.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-03-11T16:18:17.121Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-03-12T16:19:30.880Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:59:16.109Z","stale":false,"partial":false}}