{"id":"CVE-2026-61399","summary":"Apache CloudStack: Cross-Site Scripting (XSS) Vulnerability in Lock User Function in UI","details":"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.","modified":"2026-08-28T03:47:06.449093024Z","published":"2026-08-21T08:25:23.403Z","database_specific":{"cna_assigner":"apache","cwe_ids":["CWE-116"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61399.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"4.20.0.0"},{"last_affected":"4.20.3.0"},{"introduced":"4.21.0.0"},{"last_affected":"4.22.1.0"}]},{"extracted_events":[{"introduced":"4.20.0.0"},{"fixed":"4.20.3.0"},{"introduced":"4.21.0.0"},{"fixed":"4.22.1.0"}],"source":"DESCRIPTION"}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61399.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61399"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/cloudstack","events":[{"introduced":"2fe3fcef7c77cf9a1b629c9df3afc0cdb88ad4f6"},{"fixed":"c8599040b4756034c7105806a53d2c99eb7ea0fe"},{"introduced":"f9513b47bf8cda46c2cee7e31d4d662346bc7399"},{"fixed":"348ce953a99246a756b527994f7745a7be038234"}],"database_specific":{"extracted_events":[{"introduced":"4.20.0.0"},{"fixed":"4.20.3.0"},{"introduced":"4.21.0.0"},{"fixed":"4.22.1.0"}],"source":"DESCRIPTION"}}],"versions":["4.22.0.0","4.21.0.0","4.20.1.0","4.20.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61399.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}