CVE-2023-30539 Information

Description

Nextcloud is a personal home server system. Depending on the set up tags and other workflows this issue can be used to limit access of others or being able to grant them access when there are system tag based files access control or files retention rules. It is recommended that the Nextcloud Server is upgraded to 24.0.11 or 25.0.5 the Nextcloud Enterprise Server to 21.0.9.11 22.2.10.11 23.0.12.6 24.0.11 or 25.0.5 and the Nextcloud Files automated tagging app to 1.11.1 1.12.1 1.13.1 1.14.2 1.15.3 or 1.16.1. Users unable to upgrade should disable all workflow related apps. Users are advised to upgrade.

Reference

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3m2f-v8x7-9w99 https://hackerone.com/reports/1895976 https://github.com/nextcloud/server/pull/37252 https://github.com/nextcloud/files_automatedtagging/pull/705