Vulnerability Database

317,182

Total vulnerabilities in the database

CVE-2021-32733

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.

  • Published: Jul 12, 2021
  • Updated: Nov 16, 2025
  • CVE: CVE-2021-32733
  • Severity: Low
  • Exploit:

CVSS v3:

  • Severity: Low
  • Score: 4.8
  • AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:P/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
nextcloud / nextcloud_server 21.0.0 21.0.3
nextcloud / nextcloud_server 20.0.0 20.0.11
nextcloud / nextcloud_server - 19.0.13