CVE-2019-15624

Name: CVE-2019-15624
Creator: NVD / NIST
Published: 2020-02-04T20:15:12.747+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 1.47%

Last modified Jun 17, 2026

CVE-2019-15624 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.. EPSS estimates a 1.47% chance of exploitation in the next 30 days.

Description

Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.

Metrics

CVSS 3.1

4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

1.47%

70.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions	Update
Nextcloud	Nextcloud Server	< 14.0.11	—
Nextcloud	Nextcloud Server	>= 15.0.0, < 15.0.8	—
Opensuse	Backports	sle-15	Sp1
Suse	Suse Linux Enterprise Server	12	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.htmlMailing List, Third Party Advisory
https://hackerone.com/reports/508493Exploit, Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2019-015Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.htmlMailing List, Third Party Advisory
https://hackerone.com/reports/508493Exploit, Third Party Advisory
https://nextcloud.com/security/advisory/?id=NC-SA-2019-015Vendor Advisory

Timeline

Published: Feb 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-15624?

Improper Input Validation in Nextcloud Server 15.0.7 allows group admins to create users with IDs of system folders.

How severe is CVE-2019-15624?

CVE-2019-15624 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.

How do I fix CVE-2019-15624?

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-2019-15624?

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

Scan your code now

Source: NVD / NIST