What’s Vulnerable › Vulnerabilities

CVE-2019-15624

• Severity: medium (CVSS 4.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-02-04 · updated 2026-06-17
• Weakness: CWE-20

Description

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

Affected products

• Nextcloud Server: before 14.0.11; from 15.0.0 before 15.0.8 — fixed in 14.0.11, 15.0.8
• openSUSE Backports: sle-15-sp1
• SUSE Linux Enterprise: 12

How to fix

Upgrade to a fixed version: Nextcloud Server 14.0.11, 15.0.8. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
• https://hackerone.com/reports/508493
• https://nextcloud.com/security/advisory/?id=NC-SA-2019-015
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
• https://hackerone.com/reports/508493
• https://nextcloud.com/security/advisory/?id=NC-SA-2019-015

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