Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Misskey | Misskey | >= 12.31.0, < 2025.4.1 |
Related Weaknesses (CWE)
References
- https://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396Patch
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2ExploitVendor Advisory
FAQ
What is CVE-2025-46559?
CVE-2025-46559 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 additiona...
How severe is CVE-2025-46559?
CVE-2025-46559 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-46559?
Check the references section above for vendor advisories and patch information. Affected products include: Misskey Misskey.