CVE-2023-49791 Information

Description

Nextcloud Server provides data storage for Nextcloud an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13 24.0.12.9 25.0.13.4 26.0.9 and 27.1.4; when an attacker manages to get access to an active session of another user via another way they could delete and modify workflows by sending calls directly to the API bypassing the password confirmation shown in the UI. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13 24.0.12.9 25.0.13.4 26.0.9 and 27.1.4 contain a patch for this issue. No known workarounds are available.

Reference

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-3f8p-6qww-2prr https://github.com/nextcloud/server/pull/41520 https://hackerone.com/reports/2120667