CVE-2021-32782: nextcloud circles Cross-site Scripting
Vulnerability summary
CVE-2021-32782 is a medium (CVSS 5.8) Cross-site Scripting vulnerability in nextcloud circles. EPSS estimates a 0.83% chance of exploitation in the next 30 days, higher than 56.9% of scored vulnerabilities.
Timeline
- 07-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- NVDNIST5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NDiffers
EPSS trend
Probability
0.83%
Chance of exploitation in the next 30 days
Percentile
57%
Versus all other CVEs
30-day change
0.00 pp
From 0.83% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Nextcloud2 products
- circles< 0.19.14 | ≥ 0.20.0, < 0.20.10 | ≥ 0.21.0, < 0.21.3
- security-advisories< 0.19.1 | ≥ 0.20.0, < 0.20.10 | ≥ 0.21.0, < 0.21.3
1 vendor · 2 products
References
3 links- github.com/nextcloud/security-advisories/security/advisories/GHSA-hgpq-28gj-jrj9X Refsource CONFIRMPatchThird Party Advisory
- github.com/nextcloud/circles/commit/dbb97a83ccb342c839a54f088aa19b8ba6844b0eX Refsource MISCPatchThird Party Advisory