What is CVE-2019-15617?

CVE-2019-15617 is a medium-severity vulnerability in Nextcloud Server, classified under Improper Authentication. CVSS score: 5.4/10. Published 2020-02-04.

How severe is CVE-2019-15617?

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

Auth bypass in Nextcloud Server

CVE-2019-15617

A missing check in Nextcloud Server 17.0.0 allowed an attacker to set up a new second factor when trying to login.

Vulnerability class: Broken Authentication

EPSS: 0.006 (45.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Nextcloud Nextcloud_server
N/a Nextcloud Server — versions 17.0.1

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

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

Frequently asked questions

What is CVE-2019-15617?: CVE-2019-15617 is a medium-severity vulnerability in Nextcloud Server, classified under Improper Authentication. CVSS score: 5.4/10. Published 2020-02-04.
How severe is CVE-2019-15617?: Medium severity. CVSS v3 base score is 5.4 out of 10.