Description
Nextcloud also ships a CLI utility called nextcloudcmd which is sometimes used for automated scripting and headless servers. Versions of nextcloudcmd prior to 3.6.1 would incorrectly trust invalid TLS certificates, which may enable a Man-in-the-middle attack that exposes sensitive data or credentials to a network attacker. This affects the CLI only. It does not affect the standard GUI desktop Nextcloud clients, and it does not affect the Nextcloud server.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| nextcloud | security-advisories | < 3.6.1 | — |
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.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | nextcloud-desktop | 3.6.1-1 | — |
| Debian 13 | nextcloud-desktop | 3.6.1-1 | — |
| Debian 12 | nextcloud-desktop | 3.6.1-1 | — |
| Debian 11 | nextcloud-desktop | 3.1.1-2+deb11u2 | DLA-4303-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | nextcloud-desktop | No fix yet | — |
| Ubuntu 26.04 LTS | nextcloud-desktop | No fix yet | — |
| Ubuntu 25.10 | nextcloud-desktop | No fix yet | — |
| Ubuntu 24.04 LTS | nextcloud-desktop | No fix yet | — |
| Ubuntu 22.04 LTS | nextcloud-desktop | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | nextcloud-desktop | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP5 | nextcloud-desktop | 3.8.0-bp155.2.3.1 | openSUSE-SU-2023:0171-1 |
| SUSE Package Hub 15 SP4 | nextcloud-desktop | 3.8.0-bp154.2.3.1 | openSUSE-SU-2023:0090-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | nextcloud-desktop | 3.8.0-bp155.2.3.1 | openSUSE-SU-2023:0171-1 |
| openSUSE Leap 15.4 | nextcloud-desktop | 3.8.0-bp154.2.3.1 | openSUSE-SU-2023:0090-1 |
Advisories 4
- DLA-4303-1 nextcloud-desktop - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2023:0090-1 Security update for nextcloud-desktop SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2022-2183 Nextcloud: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2025
- openSUSE-SU-2023:0171-1 Security update for nextcloud-desktop SUSE / openSUSE Security Updates · May 7, 2025