Improper access control in Nextcloud Enterprise Server and Nextcloud Server - CVE-2023-49791
Published: December 19, 2023
Vulnerability identifier: #VU84547
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2023-49791
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 workflows do not require password confirmation on API level. A remote user can bypass implemented security restrictions and delete and modify workflows.
Affected software
Nextcloud Enterprise Server
Nextcloud Server
Nextcloud Server
How to mitigate CVE-2023-49791
Install updates from vendor's website.
Nextcloud Enterprise Server - addressed in versions 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, 27.1.4
Nextcloud Server - addressed in versions 26.0.9, 27.1.4
Nextcloud Server - addressed in versions 26.0.9, 27.1.4