CVE-2025-24900

Feb. 11, 2025, 4:15 p.m.

8.6
High

Description

Concorde, formerly know as Nexkey, is a fork of the federated microblogging platform Misskey. Due to a lack of CSRF countermeasures and improper settings of cookies for MediaProxy authentication, there is a vulnerability that allows MediaProxy authentication to be bypassed. In versions prior to 12.25Q1.1, the authentication cookie does not have the SameSite attribute. This allows an attacker to bypass MediaProxy authentication and load any image without restrictions under certain circumstances. In versions prior to 12.24Q2.3, this cookie was also used to authenticate the job queue management page (bull-board), so bull-board authentication is also bypassed. This may enable attacks that have a significant impact on availability and integrity. The affected versions are too old to be covered by this advisory, but the maintainers of Concorde strongly recommend not using older versions. Version 12.25Q1.1 contains a patch. There is no effective workaround other than updating.

Product(s) Impacted

Product Versions
Concorde
  • before 12.25Q1.1
Nexkey
  • before 12.25Q1.1
Misskey
  • UNKNOWN

Weaknesses

CWE-352
Cross-Site Request Forgery (CSRF)
The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.

References

https://github.com/nexryai/concorde/commit/2309b4a292828ddba4d57cf0e914bc433095871d
https://github.com/nexryai/concorde/commit/f3f54bde6a37ad310f83ae46de54a286c4b74059
https://github.com/nexryai/concorde/security/advisories/GHSA-5hgq-9vw8-7v87

Tags

security-advisories@github.com
CWE-352
2025-02-11
CVE-2025-24900

CVSS Score

8.6 / 10

CVSS Data

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: CHANGED
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: HIGH
    • View Vector String

    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Date

  • Published: Feb. 11, 2025, 4:15 p.m.
  • Last Modified: Feb. 11, 2025, 4:15 p.m.

Status : Awaiting Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

security-advisories@github.com

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.