CVE-2022-31118: Nextcloud Server

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Nextcloud server is an open source personal cloud solution. In affected versions an attacker could brute force to find if federated sharing is being used and potentially try to brute force access tokens for federated shares (`a-zA-Z0-9` ^ 15). It is recommended that the Nextcloud Server is upgraded to 22.2.9, 23.0.6 or 24.0.2. Users unable to upgrade may disable federated sharing via the Admin Sharing settings in `index.php/settings/admin/sharing`.

Affected products

• Nextcloud Nextcloud Server: before 22.2.9 (fixed in 22.2.9); from 23.0.0, before 23.0.6 (fixed in 23.0.6); from 24.0.0, before 24.0.2 (fixed in 24.0.2)

Published 2022-08-04. Last modified 2026-06-17.