{"id":"CVE-2021-22878","details":"Nextcloud Server prior to 20.0.6 is vulnerable to reflected cross-site scripting (XSS) due to lack of sanitization in `OC.Notification.show`.","modified":"2025-11-14T11:05:50.114026Z","published":"2021-03-03T18:15:14.817Z","references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L6BO6P6MP2MOWA6PZRXX32PLWPXN5O4S/"},{"type":"FIX","url":"https://github.com/nextcloud/server/pull/25234"},{"type":"EVIDENCE","url":"https://hackerone.com/reports/896522"},{"type":"ADVISORY","url":"https://nextcloud.com/security/advisory/?id=NC-SA-2021-005"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/server","events":[{"introduced":"0"},{"fixed":"fd26cb18701139187a14b6d6ef72ebe660b183a8"}]}],"versions":["list","v1.0.0beta1","v1.0RC1","v1.1","v11.0.0","v11.0RC2","v12.0.0beta1","v12.0.0beta2","v12.0.0beta3","v12.0.0beta4","v13.0.0RC1","v13.0.0beta1","v13.0.0beta2","v13.0.0beta3","v13.0.0beta4","v14.0.0RC1","v14.0.0RC2","v14.0.0beta1","v14.0.0beta2","v14.0.0beta3","v14.0.0beta4","v15.0.0RC1","v15.0.0beta1","v15.0.0beta2","v16.0.0RC1","v16.0.0alpha1","v16.0.0beta1","v16.0.0beta2","v16.0.0beta3","v17.0.0beta1","v17.0.0beta2","v17.0.0beta3","v17.0.0beta4","v18.0.0RC1","v18.0.0beta1","v18.0.0beta2","v18.0.0beta3","v18.0.0beta4","v19.0.0RC1","v19.0.0RC2","v19.0.0beta1","v19.0.0beta2","v19.0.0beta3","v19.0.0beta4","v19.0.0beta5","v19.0.0beta6","v19.0.0beta7","v2.0beta3","v20.0.0","v20.0.0RC1","v20.0.0RC2","v20.0.0beta1","v20.0.0beta2","v20.0.0beta3","v20.0.0beta4","v20.0.1","v20.0.1RC1","v20.0.2","v20.0.2RC1","v20.0.2RC2","v20.0.3","v20.0.3RC2","v20.0.4","v20.0.5","v20.0.5RC1","v20.0.5RC2","v20.0.6RC1","v3.0","v3.0RC1","v3.0alpha1","v4.0.0","v4.0.0RC","v4.0.0RC2","v4.0.0beta","v4.0.1","v4.0.3","v4.0.4","v4.0.5","v4.0.6","v4.5.0","v4.5.0RC1","v4.5.0RC2","v4.5.0RC3","v4.5.0beta1","v4.5.0beta2","v4.5.0beta3","v4.5.0beta4","v5.0.0","v5.0.0RC1","v5.0.0RC2","v5.0.0RC3","v5.0.0alpha1","v5.0.0beta1","v5.0.0beta2","v6.0.0RC1","v6.0.0RC2","v6.0.0alpha2","v6.0.0beta2","v6.0.0beta3","v6.0.0beta4","v6.0.0beta5","v7.0.0alpha2","v7.0.0beta1","v8.0.0","v8.0.0RC1","v8.0.0RC2","v8.0.0alpha1","v8.0.0alpha2","v8.0.0beta1","v8.0.0beta2","v8.1.0alpha1","v8.1.0alpha2","v8.1.0beta1","v8.1.0beta2","v8.1RC2","v8.2RC1","v8.2beta1","v9.0.0beta2","v9.0.1beta2","v9.0beta1","v9.1.0beta1","v9.1.0beta2"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-22878.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N"}]}