CVE-2023-39961 Information

Description

Nextcloud Server provides data storage for Nextcloud an open source cloud platform. Starting in version 24.0.4 and prior to versions 25.0.9 26.0.4 and 27.0.1 when a folder with images or an image was shared without download permissions the user could add the image inline into a text file and download it. Nextcloud Server versions 25.0.9 26.0.4 and 27.0.1 and Nextcloud Enterprise Server versions 24.0.12.5 25.0.9 26.0.4 and 27.0.1 contain a patch for this issue. No known workarounds are available.

Reference

https://github.com/nextcloud/text/pull/4481 https://hackerone.com/reports/1965156 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qhgm-w4gx-gvgp