CVE Vulnerability

CVE-2021-39221

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.

3.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.4 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j6cx-mxqf-f9vc Third Party Advisory
https://github.com/nextcloud/contacts/pull/2407 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nextcloud:contacts:*:*:*:*:*:*:*:*
Information

Published : 2021-10-25 07:15

Updated : 2021-10-27 03:09

NVD link : CVE-2021-39221

Mitre link : CVE-2021-39221

Products Affected
No products.
CWE
CWE-434

CWE-79