What is CVE-2017-0888?

CVE-2017-0888 is a medium-severity vulnerability in Nextcloud, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.3/10. Published 2017-04-05.

How severe is CVE-2017-0888?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Nextcloud

CVE-2017-0888

Nextcloud Server before 9.0.55 and 10.0.2 suffers from a Content-Spoofing vulnerability in the "files" app. The top navigation bar displayed in the files list contained partially user-controllable input leading to a potential misrepresentation of information.

Published 2017-04-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.015 (73.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000

Affected products

Nextcloud
Nextcloud Server — versions All versions before 9.0.55 and 10.0.2
Nextcloud Server — versions 10.0.2

Weakness classification (CWE)

References

hackerone.com/reports/179073 (Third Party Advisory)
nextcloud.com/security/advisory/ (Patch, Vendor Advisory)
www.securityfocus.com/bid/97491 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2017-0888?: CVE-2017-0888 is a medium-severity vulnerability in Nextcloud, classified under User Interface (UI) Misrepresentation of Critical Information. CVSS score: 4.3/10. Published 2017-04-05.
How severe is CVE-2017-0888?: Medium severity. CVSS v3 base score is 4.3 out of 10.