CVE-2017-0887

Name: CVE-2017-0887
Creator: NVD / NIST
Published: 2017-04-05T20:59:00.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2017-0887 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 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. EPSS estimates a 0.89% chance of exploitation in the next 30 days.

Description

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.

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

0.89%

54.7th 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/173622Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2017-005Broken Link, Patch, Vendor Advisory
https://hackerone.com/reports/173622Third Party Advisory
https://nextcloud.com/security/advisory/?id=nc-sa-2017-005Broken Link, Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2017-0887?

How severe is CVE-2017-0887?

CVE-2017-0887 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2017-0887?

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-2017-0887?

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

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Source: NVD / NIST