Description
Nexcloud desktop is the Desktop sync client for Nextcloud. An attacker can inject arbitrary HyperText Markup Language into the Desktop Client application in the notifications. It is recommended that the Nextcloud Desktop client is upgraded to 3.6.1. There are no known workarounds for this issue.
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