CVE-2025-46559CWE-22

Misskey Directory Traversal Vulnerability in AiScript via `Mk:api`

Medium · published May 5, 2025

CVSS v3.1
5.4
EPSS
0%
Percentile
38.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00450 · 38.1th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2025-05-05T18:38Z
EPSS history
Timeline
  • 05 MAY 18:38Z
    Misskey Directory Traversal Vulnerability in AiScript via `Mk:api`
    cvelistv5