CVE-2017-0884

4.3 mediumEPSS 0.7%

Medium (4.3) in nextcloud nextcloud server. EPSS 0.7% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

4.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWEs: CWE-732, CWE-275
Published: 2017-04-05
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nextcloud:nextcloud_server

References

https://hackerone.com/reports/169680
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002
https://hackerone.com/reports/169680
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002

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