What is CVE-2019-15618?

CVE-2019-15618 is a medium-severity vulnerability in Nextcloud Server, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-02-04.

How severe is CVE-2019-15618?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Nextcloud Server

CVE-2019-15618

Missing escaping of HTML in the Updater of Nextcloud 15.0.5 allowed a reflected XSS when starting the updater from a malicious location.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (50.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Nextcloud Nextcloud_server
N/a Nextcloud Server — versions 15.0.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

support@hackerone.com (Permissions Required, x_refsource_MISC)
support@hackerone.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2019-15618?: CVE-2019-15618 is a medium-severity vulnerability in Nextcloud Server, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2020-02-04.
How severe is CVE-2019-15618?: Medium severity. CVSS v3 base score is 4.8 out of 10.