Nextcloud: >> Contacts >> 2.1.2 Security Vulnerabilities
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.
CVSS Score
6.4
EPSS Score
0.003
Published
2021-10-25
A missing file type check in Nextcloud Contacts 3.4.0 allows a malicious user to upload SVG files as PNG files to perform cross-site scripting (XSS) attacks.
CVSS Score
5.4
EPSS Score
0.002
Published
2021-01-06
A missing file type check in Nextcloud Contacts 3.3.0 allows a malicious user to upload malicious SVG files to perform cross-site scripting (XSS) attacks.
CVSS Score
5.4
EPSS Score
0.002
Published
2021-01-06
A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.
CVSS Score
4.3
EPSS Score
0.002
Published
2020-07-10