CVE-2021-32782

Cross-Site Scripting in Nextcloud Circles

MEDIUM
5.4
CVSS Score
Published: September 7, 2021 at 08:00 PM UTC
Updated: June 17, 2026 at 03:53 AM UTC
1 product affected across 1 vendorCircles

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.8%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Circles· Nextcloudnextcloud-app
95%
v < 0.19.140.20.0 ≤ v < 0.20.100.21.0 ≤ v < 0.21.3
Affected range stops below 0.19.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.20.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 0.21.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-79

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