Description
An outdated 3rd party library in the Files PDF viewer for Nextcloud Server 18.0.2 caused a Cross-site scripting vulnerability when opening a malicious PDF.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Nextcloud Server | 18.0.3 | — |
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 SP2 | nextcloud | 20.0.0-bp152.2.3.1 | openSUSE-SU-2020:1652-1 |
| SUSE Package Hub 15 SP1 | nextcloud | 18.0.4-bp151.3.9.1 | openSUSE-SU-2020:1652-1, openSUSE-SU-2020:0668-1 |
| SUSE Package Hub 12 | nextcloud | 18.0.4-22.1 | openSUSE-SU-2020:1652-1, openSUSE-SU-2020:0667-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | nextcloud | 20.0.0-bp152.2.3.1 | openSUSE-SU-2020:1652-1 |
| openSUSE Leap 15.1 | nextcloud | 18.0.4-lp151.2.6.1 | openSUSE-SU-2020:1652-1, openSUSE-SU-2020:0670-1 |
Advisories 4
- openSUSE-SU-2020:0670-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0667-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:0668-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:1652-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://nextcloud.com/security/advisory/?id=NC-SA-2020-019
- openSUSE-SU-2020:0667 vendor-advisory
- openSUSE-SU-2020:0668 vendor-advisory
- openSUSE-SU-2020:0670 vendor-advisory
- openSUSE-SU-2020:1652 vendor-advisory
- FEDORA-2020-c9863904de vendor-advisory