CVE-2017-0887

4.3 mediumEPSS 0.9%

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a bypass in the quota limitation. Due to not properly sanitizing values provided by the `OC-Total-Length` HTTP header an authenticated adversary may be able to exceed their configured user quota. Thus using more space than allowed by the administrator.

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: 0.9% chance of exploitation in the next 30 days; higher than 59% of CVEs (scores of 2026-10-31)
CWEs: CWE-20, CWE-807
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/173622
https://nextcloud.com/security/advisory/?id=nc-sa-2017-005
https://hackerone.com/reports/173622
https://nextcloud.com/security/advisory/?id=nc-sa-2017-005

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