CVE-2026-28433

Misskey is an open source, federated social media platform. All Misskey servers running versions 10.93.0 and later, but prior to 2026.3.1, contain a vulnerability that allows importing other users' data due to lack of ownership validation. The impact of this vulnerability is estimated to be relatively low, as bad actors would require the ID corresponding to the target file for import. This vulnerability is fixed in 2026.3.1.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-g6hj-33h7-6fq8	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:misskey:misskey:*:*:*:*:*:*:*:*

History

13 Mar 2026, 17:17

Type	Values Removed	Values Added
References	~~() https://github.com/misskey-dev/misskey/security/advisories/GHSA-g6hj-33h7-6fq8 -~~	() https://github.com/misskey-dev/misskey/security/advisories/GHSA-g6hj-33h7-6fq8 - Mitigation, Vendor Advisory
CPE		cpe:2.3:a:misskey:misskey::::::::
Summary		(es) Misskey es una plataforma de redes sociales de código abierto y federada. Todos los servidores Misskey que ejecutan versiones 10.93.0 y posteriores, pero anteriores a la 2026.3.1, contienen una vulnerabilidad que permite importar datos de otros usuarios debido a la falta de validación de propiedad. El impacto de esta vulnerabilidad se estima que es relativamente bajo, ya que los actores maliciosos requerirían el ID correspondiente al archivo objetivo para la importación. Esta vulnerabilidad se corrige en la 2026.3.1.
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 4.3
First Time		Misskey misskey Misskey

10 Mar 2026, 07:43

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-10 07:43

Updated : 2026-03-13 17:17

NVD link : CVE-2026-28433

Mitre link : CVE-2026-28433

CVE.ORG link : CVE-2026-28433

JSON object : View

Products Affected

misskey

misskey

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

CWE-862

Missing Authorization

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