Description (CNA)
Nextcloud Text is a collaborative document editing application that uses Markdown. A cross-site scripting vulnerability is present in versions prior to 19.0.13, 20.0.11, and 21.0.3. The Nextcloud Text application shipped with Nextcloud server used a `text/html` Content-Type when serving files to users. Due the strict Content-Security-Policy shipped with Nextcloud, this issue is not exploitable on modern browsers supporting Content-Security-Policy. The issue was fixed in versions 19.0.13, 20.0.11, and 21.0.3. As a workaround, use a browser that has support for Content-Security-Policy.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| nextcloud / security-advisories | affected < 19.0.13; affected >= 20.0.0, < 20.0.11; affected >= 21.0.0, < 21.0.3 |
CWE
CWE-79
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x4w3-jhcr-57pq
- https://github.com/nextcloud/text/pull/1689
- https://hackerone.com/reports/1241460
ADP enrichment
No English description supplied.