CVE-2021-32657

low-risk
Published 2021-06-01

Nextcloud Server is a Nextcloud package that handles data storage. In versions of Nextcloud Server prior to 10.0.11, 20.0.10, and 21.0.2, a malicious user may be able to break the user administration page. This would disallow administrators to administrate users on the Nextcloud instance. The vulnerability is fixed in versions 19.0.11, 20.0.10, and 21.0.2. As a workaround, administrators can use the OCC command line tool to administrate the Nextcloud users.

Do I need to act?

-
0.49% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.3/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Nextcloud

References (6)

Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fx62-q...
Third Party Advisory https://hackerone.com/reports/1147611
Third Party Advisory https://security.gentoo.org/glsa/202208-17
Third Party Advisory https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fx62-q...
Third Party Advisory https://hackerone.com/reports/1147611
Third Party Advisory https://security.gentoo.org/glsa/202208-17
25
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal