Total vulnerabilities in the database
Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any component of Nextcloud using rate-limits (as as AnonRateThrottle or UserRateThrottle) was thus not rate limited on instances not having a memory cache backend configured. In the case of a default installation, this would notably include the rate-limits on the two factor codes. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5, or 22.2.0. As a workaround, enable a memory cache backend in config.php.
| Software | From | Fixed in |
|---|---|---|
| nextcloud / nextcloud_server | 22.0.0 | 22.2.0 |
| nextcloud / nextcloud_server | 21.0.0 | 21.0.5 |
| nextcloud / nextcloud_server | - | 20.0.13 |