CVE-2021-39221 (GCVE-0-2021-39221)
Vulnerability from cvelistv5
Published
2021-10-25 19:05
Modified
2024-08-04 01:58
Severity ?
6.4 (Medium) - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Summary
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Contacts application prior to version 4.0.3 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 Contacts application is upgraded to 4.0.3. As a workaround, one may use a browser that has support for Content-Security-Policy.
References
Impacted products
Vendor Product Version
nextcloud security-advisories Version: < 4.0.3
 Create a notification for this product.
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