References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

Known Affected Software Configurations Switch to CPE 2.2

Change History

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

OR
          *cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:* versions from (including) 12.31.0 up to (excluding) 2025.4.1

GitHub, Inc.: https://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396b8b663 Types: Patch

GitHub, Inc.: https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2 Types: Exploit, Vendor Advisory

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.

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

CWE-22

https://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396b8b663

https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2