{"schemaVersion":3,"id":"CVE-2026-48189","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An improper Input Validation vulnerability in OTRS Customer Backend module allows to access customer information which are restricted to other groups. Please note that the feature has to be anabled and CustomerGroupSupport has to be used to be affected.\n\nThis issue affects OTRS:\n\n  *  7.0.X\n  *  8.0.X\n  *  2023.X\n  *  2024.X\n  *  2025.X\n  *  2026.X before 2026.4.X","dates":{"published":"2026-06-01T03:33:03.373Z","modified":"2026-06-01T13:14:49.791Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.7,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.7,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.7,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00341,"percentile":0.26348,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.143,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00198},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00341,"percentile":0.26348}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00198,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00341,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00341,"percentile":0.26348}]},"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":"otrs ag","product":"otrs","name":"OTRS","label":"otrs","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 7.0.0, < 7.1.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 8.0.0, < 8.1.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2023.0, < 2024.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2024.0, < 2025.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2025.0, < 2026.0","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2026.x, ≤ 2026.3.x","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 7.0.0, < 7.1.0 | ≥ 8.0.0, < 8.1.0 | ≥ 2023.0, < 2024.0 | ≥ 2024.0, < 2025.0 | ≥ 2025.0, < 2026.0 | ≥ 2026.x, ≤ 2026.3.x","eol":null,"hubHref":"/vendor/otrs_ag/otrs"},{"vendor":"otrs","product":"otrs","name":"otrs","label":"otrs","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 7.0.0, ≤ 8.0.37","noFixRecorded":false,"fixedIn":null},{"text":"≥ 2023.0.0, < 2026.4.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 7.0.0, ≤ 8.0.37 | ≥ 2023.0.0, < 2026.4.1","eol":null,"hubHref":"/vendor/otrs/otrs"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://otrs.com/release-notes/otrs-security-advisory-2026-03/","label":"otrs.com/release-notes/otrs-security-advisory-2026-03/","hostname":"otrs.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-06-01T03:33:03.373Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-01T13:14:49.791Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":23,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T13:29:09.386Z","stale":false,"partial":false}}