CVE-2021-32655: Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files…

PriorityP416low3.5CVSS 3.1

AVNACLPRLUIRSUCLINAN

EPSS

1.03%

59.6th percentile

Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
nextcloud	nextcloud_server	< 19.0.11	19.0.11
nextcloud	nextcloud_server	>= 20.0.0 < 20.0.10	20.0.10
nextcloud	nextcloud_server	>= 21.0.0 < 21.0.2	21.0.2
nextcloud	security-advisories	< 19.0.11	19.0.11
nextcloud	security-advisories	—	—
nextcloud	security-advisories	—	—

CVSS provenance

nvdv3.13.5LOWCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N

nvdv2.03.5LOWAV:N/AC:M/Au:S/C:P/I:N/A:N

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