{"id":"CVE-2021-36383","aliases":["EUVD-2022-4005","GHSA-grvm-gcqf-gh8q"],"status":"published","title":"Xen Orchestra Mishandles Authorization","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00714,"percentile":0.54044,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-863"],"published":"2021-07-12T13:18:48Z","modified":"2026-06-17T03:58:47Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"xo-web","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.80.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"xo-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"5.84.0"}]}]},{"source":"osv","ecosystem":"npm","package":"xo-web","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"5.80.0"}]}]},{"source":"osv","ecosystem":"npm","package":"xo-server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"5.84.0"}]}]}],"products":[{"vendor":"xen-orchestra","product":"xo-server"},{"vendor":"xen-orchestra","product":"xo-web"}],"references":[{"url":"https://github.com/vatesfr/xen-orchestra/issues/5712","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-36383","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-grvm-gcqf-gh8q"},{"url":"https://github.com/vatesfr/xen-orchestra","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-36383","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","status":"published","published":"2021-07-12T13:18:48Z","modified":"2024-08-04T00:54:51.428Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2022-4005","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","status":"published","published":"2021-07-12T13:18:48Z","modified":"2024-08-04T00:54:51Z","updated_at":"2026-11-03T03:24:29.329171Z"}],"ghsa":[{"id":"GHSA-grvm-gcqf-gh8q","title":"Xen Orchestra Mishandles Authorization","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket `resourceSet.getAll` data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","status":"published","published":"2022-05-24T19:07:30Z","modified":"2023-10-19T18:34:47Z","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-863"],"updated_at":"2026-11-02T14:37:08.847568Z"}],"nvd":[{"id":"CVE-2021-36383","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket resourceSet.getAll data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","status":"published","published":"2021-07-12T14:15:11.77Z","modified":"2026-06-17T03:58:47.003Z","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":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.747384Z"}],"osv":[{"id":"GHSA-grvm-gcqf-gh8q","title":"Xen Orchestra Mishandles Authorization","description":"Xen Orchestra (with xo-web through 5.80.0 and xo-server through 5.84.0) mishandles authorization, as demonstrated by modified WebSocket `resourceSet.getAll` data is which the attacker changes the permission field from none to admin. The attacker gains access to data sets such as VMs, Backups, Audit, Users, and Groups.","status":"published","published":"2022-05-24T19:07:30Z","modified":"2023-11-08T04:06:13.465015Z","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-863"],"updated_at":"2026-11-02T15:46:48.191583Z"}]}}