Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| nextcloud / security-advisories | affected < 10.0.7; affected >= 10.1.0, < 10.1.4; affected >= 11.1.0, < 11.1.2; affected < 11.2.0; affected >= 12.0.0.alpha-1, < 12.0.0 |
CWE
CWE-434, CWE-79
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xhxq-f4vg-jw5g
- https://github.com/nextcloud/spreed/pull/542
- https://hackerone.com/reports/1135481
ADP enrichment
No English description supplied.