# CVE-2025-24973

## Summary

- **CVE ID:** CVE-2025-24973
- **Severity:** CRITICAL
- **CVSS Score:** 9.4 (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)
- **CWE:** CWE-613
- **Published:** Feb 11, 2025
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- nexryai — concorde (< 12.25Q1.1)

## References

- [CNA](https://github.com/nexryai/concorde/security/advisories/GHSA-2369-p2wh-7cc2)
- [CNA](https://github.com/nexryai/concorde/commit/1f6ac9b289906083b132e4f9667a31a60ef83e4e)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.19%
- **EPSS Percentile:** 8.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._