CVE-2017-0884

Name: CVE-2017-0884
Creator: NVD / NIST
Published: 2017-04-05T20:59:00.243+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2017-0884 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.67%

47.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	< 9.0.55
Nextcloud	Nextcloud Server	>= 10.0.0, < 10.0.2

References

https://hackerone.com/reports/169680Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002Broken Link, Patch, Vendor Advisory
https://hackerone.com/reports/169680Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2017-002Broken Link, Patch, Vendor Advisory

Timeline

Published: Apr 5, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-0884?

How severe is CVE-2017-0884?

CVE-2017-0884 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2017-0884?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-0884?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST