CVE-2025-46559 MEDIUM

CVE-2025-46559: Misskey Directory Traversal Vulnerability in AiScript via `Mk:api`

Vendor Misskey-Dev
Product misskey
Weakness CWE-22 · Path traversal
Published May 5, 2025
Last update May 5, 2025
View on NVD All CVEs

CVSS base score

5.4/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction Required
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Misskey is an open source, federated social media platform. Starting in version 12.31.0 and prior to version 2025.4.1, missing validation in `Mk:api` allows malicious AiScript code to access additional endpoints that it isn't designed to have access to. The missing validation allows malicious AiScript code to prefix a URL with `../` to step out of the `/api` directory, thereby being able to make requests to other endpoints, such as `/files`, `/url`, and `/proxy`. Version 2025.4.1 fixes the issue.

Key dates

02Disclosure timeline

May 5, 2025 CVE published
May 5, 2025 Record updated