What is CVE-2018-3780?

CVE-2018-3780 is a medium-severity vulnerability in Nextcloud Nextcloud/server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-08-13.

How severe is CVE-2018-3780?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Nextcloud Nextcloud/server

CVE-2018-3780

A missing sanitization of search results for an autocomplete field in NextCloud Server <13.0.5 could lead to a stored XSS requiring user-interaction. The missing sanitization only affected user names, hence malicious search results could only be crafted by authenticated users.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (55.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nextcloud Nextcloud/server — versions >13.0.5
Nextcloud Nextcloud_server

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support@hackerone.com (x_refsource_CONFIRM, Vendor Advisory)
support@hackerone.com (Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-3780?: CVE-2018-3780 is a medium-severity vulnerability in Nextcloud Nextcloud/server, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-08-13.
How severe is CVE-2018-3780?: Medium severity. CVSS v3 base score is 5.4 out of 10.