{"id":"CVE-2026-61399","aliases":["EUVD-2026-63838","GHSA-4rrq-73x5-wj26"],"status":"published","title":"Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-08","score":0.00502,"percentile":0.43216,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-116"],"published":"2026-08-21T08:25:23Z","modified":"2026-11-08T02:47:39Z","products":[{"vendor":"apache","product":"cloudstack"},{"vendor":"apache software foundation","product":"apache cloudstack"}],"references":[{"url":"https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc","tags":["vendor-advisory","Mailing List","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61399","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-4rrq-73x5-wj26"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61399.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-61399","title":"Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","status":"published","published":"2026-08-21T08:25:23.403Z","modified":"2026-08-24T17:04:44.124Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:19:53.4444Z"}],"euvd":[{"id":"EUVD-2026-63838","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","status":"published","published":"2026-08-21T08:25:23Z","modified":"2026-08-24T17:04:44Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T18:01:34.563496Z"}],"ghsa":[{"id":"GHSA-4rrq-73x5-wj26","title":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock...","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","status":"published","published":"2026-08-21T09:32:05Z","modified":"2026-08-24T18:32:50Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T15:10:54.733778Z"}],"nvd":[{"id":"CVE-2026-61399","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","status":"published","published":"2026-08-21T09:16:39.603Z","modified":"2026-10-16T15:10:00.103Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-116"],"updated_at":"2026-11-02T14:12:40.665005Z"}],"osv":[{"id":"CVE-2026-61399","title":"Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI","description":"Improper Encoding or Escaping of Output vulnerability in Apache CloudStack's UI while using Lock User Functionality.\n\nThis issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.\n\nUsers are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.","status":"published","published":"2026-08-21T08:25:23.403Z","modified":"2026-11-08T02:47:39.248355994Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-116"],"updated_at":"2026-11-08T03:29:52.421856Z"}]}}