{"id":"CVE-2023-22359","aliases":["EUVD-2023-26522","GHSA-r33q-ccvx-f3w8","UBUNTU-CVE-2023-22359"],"status":"published","title":"User-enumeration in RestAPI","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.005,"percentile":0.43159,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200","CWE-203"],"published":"2023-06-26T06:51:24Z","modified":"2026-10-24T10:31:00Z","affected":[{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.6p5-1","1.2.6p12-1","1.2.6p12-1ubuntu0.16.04.1","1.2.6p12-1ubuntu0.16.04.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"check-mk","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.8p16-1ubuntu0.1","1.2.8p16-1ubuntu0.2"]}],"products":[{"vendor":"checkmk","product":"checkmk"},{"vendor":"checkmk gmbh","product":"checkmk"},{"vendor":"tribe29","product":"checkmk"}],"references":[{"url":"https://checkmk.com/werk/15890","tags":["x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22359"},{"url":"https://github.com/advisories/GHSA-r33q-ccvx-f3w8"},{"url":"https://ubuntu.com/security/CVE-2023-22359","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-22359","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-22359","title":"User-enumeration in RestAPI","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T06:51:24.193Z","modified":"2024-08-28T20:25:29.123Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:35:15.779187Z"}],"euvd":[{"id":"EUVD-2023-26522","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T06:51:24Z","modified":"2024-08-28T20:25:29Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T00:56:08.302583Z"}],"ghsa":[{"id":"GHSA-r33q-ccvx-f3w8","title":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T09:30:22Z","modified":"2024-08-26T12:32:23Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T14:58:04.94606Z"}],"nvd":[{"id":"CVE-2023-22359","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T07:15:09.297Z","modified":"2026-06-17T05:35:09.95Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:08:12.414559Z"}],"osv":[{"id":"CVE-2023-22359","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T07:15:09.297Z","modified":"2026-10-24T10:31:00.818105527Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:30.334753Z"},{"id":"UBUNTU-CVE-2023-22359","description":"User enumeration in Checkmk \u003c=2.2.0p4 allows an authenticated attacker to enumerate usernames.","status":"published","published":"2023-06-26T07:15:00Z","modified":"2025-10-24T05:01:46Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T16:54:20.198616Z"}]}}