Is CVE-2025-46559 actively exploited?

CVE-2025-46559 has no public evidence of in-the-wild exploitation as of 2025-09-03.

What is the CVSS score for CVE-2025-46559?

CVE-2025-46559 has a CVSS score of 5.4 (MEDIUM severity). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N.

How do I patch CVE-2025-46559?

Patch guidance is available from misskey security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-46559.

CVE-2025-46559 - remediation guidance & executive summary

Description

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:N
Attack Vector: network
Complexity: high
Privileges: low
User Action: required
Scope: unchanged
Confidentiality: low
Integrity: high
Availability: none
Weaknesses: CWE-22 · Path Traversal

Metadata

Primary Vendor: MISSKEY
Published: 5/5/2025
Last Modified: 9/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2025-46559

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary