CVE-2017-0883: Nextcloud Server

Medium severity, CVSS 6.4. EPSS: 0.6% chance of exploitation in the next 30 days.

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a permission increase on re-sharing via OCS API issue. A permission related issue within the OCS sharing API allowed an authenticated adversary to reshare shared files with an increasing permission set. This may allow an attacker to edit files in a share despite having only a 'read' permission set. Note that this only affects folders and files that the adversary has at least read-only permissions for.

Affected products

• Nextcloud Nextcloud Server: up to and including 9.0.54; version 10.0.2 only

Published 2017-04-05. Last modified 2026-06-17.