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CVE-2021-32782

20
FAUCET Score

CVE-2021-32782 describes a stored Cross-Site Scripting (XSS) vulnerability in Nextcloud Circles, an open-source social network for the Nextcloud ecosystem. This medium-severity vulnerability (CVSS 5.4) requires user interaction and low privileges, potentially leading to limited impact on confidentiality and integrity. While modern browsers with Content-Security-Policy (CSP) mitigate the risk, older browsers like Internet Explorer remain vulnerable. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.19.14CPE matchmatch criteria
cpe:2.3:a:nextcloud:circles:*:*:*:*:*:*:*:*
>= 0.20.0, < 0.20.10CPE matchmatch criteria
cpe:2.3:a:nextcloud:circles:*:*:*:*:*:*:*:*
>= 0.21.0, < 0.21.3CPE matchmatch criteria
cpe:2.3:a:nextcloud:circles:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.3
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.83%
Probability of exploitation in next 30 days
EPSS Percentile
53.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0083 is in the 89th percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / nextcloud/circles/commit/dbb97a83ccb342c839a54f088aa19b8ba6844b0e
PatchThird Party Advisory
github.com / nextcloud/security-advisories/security/advisories/GHSA-hgpq-28gj-jrj9
PatchThird Party Advisory
hackerone.com / reports/1217606
Permissions RequiredThird Party Advisory