Nextcloud Server users can make external storage mount points inaccessible for other users
CVE-2023-48239
8.5HIGH
What is CVE-2023-48239?
Nextcloud Server, an open-source cloud solution, has a vulnerability that allows malicious users to modify personal and global external storage settings, rendering them inaccessible to all other users. This issue affects Nextcloud Server versions before 25.0.13 and Nextcloud Enterprise Server versions prior to 20.0.14.16, among others. To mitigate the risk, it's recommended to upgrade to patched versions, or alternatively, disable the affected external storage application, albeit at the cost of accessibility.
Affected Version(s)
security-advisories >= 25.0.0, < 25.0.13 < 25.0.0, 25.0.13
security-advisories >= 26.0.0, < 26.0.8 < 26.0.0, 26.0.8
security-advisories >= 27.0.0, < 27.1.3 < 27.0.0, 27.1.3