Description
Nextcloud Server before 9.0.55 and 10.0.2 suffers from a creation of folders in read-only folders despite lacking permissions issue. Due to a logical error in the file caching layer an authenticated adversary is able to create empty folders inside a shared folder. Note that this only affects folders and files that the adversary has at least read-only permissions for.
References (2)
Core 2
Core References
Broken Link, Patch, Vendor Advisory x_refsource_confirm
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002
Third Party Advisory x_refsource_misc
https://hackerone.com/reports/169680
Scores
CVSS v3
4.3
EPSS
0.0010
EPSS Percentile
26.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Details
CWE
CWE-275
CWE-732
Status
published
Products (2)
Nextcloud/Nextcloud Server
All versions before 9.0.55 and 10.0.2
nextcloud/nextcloud_server
< 9.0.55
Published
Apr 05, 2017
Tracked Since
Feb 18, 2026