CVE-2025-24973 Information

Description

Concorde formerly know as Nexkey is a fork of the federated microblogging platform Misskey. Prior to version 12.25Q1.1 due to an improper implementation of the logout process authentication credentials remain in cookies even after a user has explicitly logged out which may allow an attacker to steal authentication tokens. This could have devastating consequences if a user with admin privileges is (or was) using a shared device. Users who have logged in on a shared device should go to Settings > Security and regenerate their login tokens. Version 12.25Q1.1 fixes the issue. As a workaround clear cookies and site data in the browser after logging out.

Reference

https://github.com/nexryai/concorde/commit/1f6ac9b289906083b132e4f9667a31a60ef83e4e https://github.com/nexryai/concorde/security/advisories/GHSA-2369-p2wh-7cc2