{"id":"CVE-2021-39222","details":"Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Talk application was vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. For exploitation, a user would need to right-click on a malicious file and open the file in a new tab. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. It is recommended that the Nextcloud Talk application is upgraded to patched versions 10.0.7, 10.1.4, 11.1.2, 11.2.0 or 12.0.0. As a workaround, use a browser that has support for Content-Security-Policy.","aliases":["GHSA-xhxq-f4vg-jw5g"],"modified":"2026-08-07T16:57:37.335728Z","published":"2021-11-15T19:15:07.297Z","references":[{"type":"ADVISORY","url":"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xhxq-f4vg-jw5g"},{"type":"ADVISORY","url":"https://github.com/nextcloud/spreed/pull/542"},{"type":"REPORT","url":"https://hackerone.com/reports/1135481"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/spreed","events":[{"introduced":"0"},{"fixed":"dae087773399f4b704ba4b9f22f74e0c12ac96f4"},{"introduced":"a7fc0ed75ed8970846df758bf5c04750432e50ad"},{"fixed":"9a5635719622fd7dfa5a98b0d0ce92519ac2ce04"},{"introduced":"ecdbfcb42460e754b26933575576369643ee8661"},{"fixed":"bc0f9dc685befbf77d1baee7670044d16875b783"}],"database_specific":{"cpe":"cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"10.0.7"},{"introduced":"10.1.0"},{"fixed":"10.1.4"},{"introduced":"11.0.0"},{"fixed":"11.1.2"}],"source":"CPE_RANGE"}}],"versions":["v10.1.3","v11.1.1","v10.0.6","v10.1.2","v11.0.0","v10.1.1","v10.0.5","v10.1.0","v10.0.4","v10.0.3","v10.0.2","v10.0.1","v10.0.0","v10.0.0-rc.2","v10.0.0-rc.1","v10.0.0-beta.2","v10.0.0-beta.1","v9.0.0-beta.1","v8.0.0","v8.0.0-alpha.6","v8.0.0-alpha.5","v8.0.0-alpha.4","v8.0.0-alpha.3","v8.0.0-alpha.2","v8.0.0-alpha.1","v7.0.0-beta.1","v6.0.0-rc.2","v6.0.0-rc.1","v5.99.10","v4.99.5","v4.0.0","v3.99.12","v3.99.11","v3.99.10","v3.99.8","v3.0.1","v3.0.0","v2.9.1","v2.9.0","v2.0.0","v1.2","v1.1.2","v1.0.22","v1.0.21"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39222.json"}},{"ranges":[{"type":"GIT","repo":"https://github.com/nextcloud/talk-android","events":[{"introduced":"f1df514ff0b6000a640c9f0dee70773f79ad7d7f"},{"fixed":"2f661b8076e79c9df8941cbadce59750cd7dfb0f"}],"database_specific":{"cpe":"cpe:2.3:a:nextcloud:talk:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"11.0.0"},{"fixed":"11.1.2"}],"source":"CPE_RANGE"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-39222.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"}]}