Description
A missing input validation in Nextcloud Server before 20.0.2, 19.0.5, 18.0.11 allows users to store unlimited data in workflow rules causing load and potential DDoS on later interactions and usage with those rules.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Nextcloud Server | Fixed in 20.0.2, 19.0.5, 18.0.11 | — |
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 | 20.0.11-bp153.2.3.1 | openSUSE-SU-2021:1068-1 |
| SUSE Package Hub 15 SP2 | nextcloud | 20.0.7-bp152.2.6.1 | openSUSE-SU-2021:1068-1, openSUSE-SU-2021:0274-1 |
| SUSE Package Hub 15 SP1 | nextcloud | 20.0.11-bp153.2.3.1 | openSUSE-SU-2021:1068-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 12 | nextcloud | 20.0.11-bp153.2.3.1 | openSUSE-SU-2021:1068-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | nextcloud | 20.0.11-bp153.2.3.1 | openSUSE-SU-2021:1068-1 |
| openSUSE Leap 15.2 | nextcloud | 20.0.7-lp152.3.6.1 | openSUSE-SU-2021:1068-1, openSUSE-SU-2021:0262-1 |
Advisories 3
- openSUSE-SU-2021:1068-1 Security update for nextcloud SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0274-1 Security update for nextcloud SUSE / openSUSE Security Updates · May 7, 2025
- openSUSE-SU-2021:0262-1 Security update for nextcloud SUSE / openSUSE Security Updates · May 7, 2025