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CVE-2025-46559

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

Published: May 5, 2025Updated: Sep 3, 2025 Sources: CVE List NVDCWE-22
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.4%
Top 71.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:HPR:LUI:RS:UC:LI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-22

Affected Products

misskeymisskey
SaaS
Communications / messaging-chat
misskeymisskey-dev
SaaS
Communications / messaging-chat
misskeyoss-projectCommunicationsaka misskey, summaly
misskey-devoss-projectCommunicationsaka misskey, summaly

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://github.com/misskey-dev/misskey/commit/583df3ec63e25a1fd34def0dac13405396b8b663
github.com
https://github.com/misskey-dev/misskey/security/advisories/GHSA-gmq6-738q-vjp2
github.com

Timeline

Published
May 5, 2025
Last Updated
Sep 3, 2025

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