Improper access control in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-30539

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Main Vulnerability Database Vulnerabilities #VU75399

Improper access control in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-30539

Published: April 21, 2023


Vulnerability identifier: #VU75399
CSH Severity: Medium
CVSS v4: 2.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-30539
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote user can set up workflows using restricted and invisible system tags.


Affected software

Nextcloud Enterprise Server
Nextcloud Server
Files Automated Tagging App

How to mitigate CVE-2023-30539

Install updates from vendor's website.

Nextcloud Enterprise Server - addressed in versions 21.0.9.11, 22.2.10.11, 23.0.12.6, 24.0.11, 25.0.5
Nextcloud Server - addressed in versions 24.0.11, 25.0.5
Files Automated Tagging App - addressed in versions 1.11.1, 1.12.1, 1.13.1, 1.14.2, 1.15.3, 1.16.1

External References

Related Security Bulletins