Nextcloud Server before 9.0.54 and 10.0.0 suffers from an improper authorization check on removing shares. The Sharing Backend as implemented in Nextcloud does differentiate between shares to users and groups. In case of a received group share, users should be able to unshare the file to themselves but not to the whole group. The previous API implementation simply unshared the file to all users in the group.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2017-03-28T02:46:00

Updated: 2024-08-06T02:50:38.553Z

Reserved: 2016-11-19T00:00:00

Link: CVE-2016-9464

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2017-03-28T02:59:00.997

Modified: 2024-11-21T03:01:16.187

Link: CVE-2016-9464

cve-icon Redhat

No data.