CVE-2021-32782

Name: CVE-2021-32782
Creator: NVD / NIST
Published: 2021-09-07T20:15:07.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2021-32782 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.81%

52.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Circles	< 0.19.14
Nextcloud	Circles	>= 0.20.0, < 0.20.10
Nextcloud	Circles	>= 0.21.0, < 0.21.3

References

https://github.com/nextcloud/circles/commit/dbb97a83ccb342c839a54f088aa19b8ba6844b0ePatch, Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hgpq-28gj-jrj9Patch, Third Party Advisory
https://hackerone.com/reports/1217606Permissions Required, Third Party Advisory
https://github.com/nextcloud/circles/commit/dbb97a83ccb342c839a54f088aa19b8ba6844b0ePatch, Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hgpq-28gj-jrj9Patch, Third Party Advisory
https://hackerone.com/reports/1217606Permissions Required, Third Party Advisory

Timeline

Published: Sep 7, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32782?

How severe is CVE-2021-32782?

CVE-2021-32782 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32782?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-32782?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST