Description
Nextcloud server is a self hosted system designed to provide cloud style services. In affected versions the User Status API did not consider the user enumeration settings by the administrator. This allowed a user to enumerate other users on the instance, even when user listings where disabled. It is recommended that the Nextcloud Server is upgraded to 20.0.14, 21.0.6 or 22.2.1. There are no known workarounds.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nextcloud | security-advisories | < 20.0.14, >= 21.0.0, < 21.0.6, >= 22.2.0, < 22.2.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP3 | nextcloud | 21.0.9-bp153.2.12.1 | openSUSE-SU-2022:0098-1 |
| SUSE Package Hub 12 | nextcloud | 21.0.9-37.1 | openSUSE-SU-2022:0089-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | nextcloud | 21.0.9-bp153.2.12.1 | openSUSE-SU-2022:0098-1 |
Advisories 2
- openSUSE-SU-2022:0098-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2022:0089-1 Security update for nextcloud SUSE / openSUSE Security Updates · May 7, 2025