CVE-2021-32656 | BDVDB-2026-154613 Detail

Description#

Nextcloud Server is a Nextcloud package that handles data storage. A vulnerability in federated share exists in versions prior to 19.0.11, 20.0.10, and 21.0.2. An attacker can gain access to basic information about users of a server by accessing a public link that a legitimate server user added as a federated share. This happens because Nextcloud supports sharing registered users with other Nextcloud servers, which can be done automatically when selecting the "Add server automatically once a federated share was created successfully" setting. The vulnerability is patched in versions 19.0.11, 20.0.10, and 21.0.2 As a workaround, disable "Add server automatically once a federated share was created successfully" in the Nextcloud settings.

Impact#

Weaknesses#

References#

Exploit#

History#

1. Version 12021-06-01Record published in the CVE List.
2. Version 22024-08-03Most recent update recorded in the CVE List.