CVE-2021-32782

Description

Nextcloud Circles is an open source social network built for the nextcloud ecosystem. In affected versions the Nextcloud Circles application is vulnerable to a stored Cross-Site Scripting (XSS) vulnerability. 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 Circles application is upgraded to 0.21.3, 0.20.10 or 0.19.14 to resolve this issue. As a workaround users may use a browser that has support for Content-Security-Policy. A notable exemption is Internet Explorer which does not support CSP properly.

CvssV3 impact

Version

3.1

VectorString

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

AttackVector

NETWORK

AttackComplexity

LOW

PrivilegesRequired

LOW

UserInteraction

REQUIRED

Scope

CHANGED

ConfidentialityImpact

LOW

IntegrityImpact

LOW

AvailabilityImpact

NONE

BaseScore

5.4

BaseSeverity

MEDIUM

CvssV2 impact

AccessComplexity

MEDIUM

ConfidentialityImpact

NONE

AvailabilityImpact

NONE

IntegrityImpact

PARTIAL

BaseScore

3.5

VectorString

AV:N/AC:M/Au:S/C:N/I:P/A:N

Version

2.0

AccessVector

NETWORK

Authentication

SINGLE