Description
Exposure of Private Information in Nextcloud Server 16.0.1 causes the server to send it's domain and user IDs to the Nextcloud Lookup Server without any further data when the Lookup server is disabled.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Nextcloud Server | 16.0.1 | — |
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 SP1 | nextcloud | 15.0.14-bp151.3.3.1 | openSUSE-SU-2020:0229-1, openSUSE-SU-2020:0220-1 |
| SUSE Package Hub 15 | nextcloud | 15.0.14-bp151.3.3.1 | openSUSE-SU-2020:0220-1 |
| SUSE Package Hub 12 | nextcloud | 15.0.14-bp151.3.3.1 | openSUSE-SU-2020:0220-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | nextcloud | 15.0.14-bp151.3.3.1 | openSUSE-SU-2020:0220-1 |
Advisories 2
- openSUSE-SU-2020:0220-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0229-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://hackerone.com/reports/508490
- https://nextcloud.com/security/advisory/?id=NC-SA-2019-016
- openSUSE-SU-2020:0220 vendor-advisory
- openSUSE-SU-2020:0229 vendor-advisory