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.

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History

Tue, 10 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 10 Mar 2026 14:15:00 +0000

Type Values Removed Values Added
First Time appeared Misskey
Misskey misskey
Vendors & Products Misskey
Misskey misskey

Mon, 09 Mar 2026 21:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Misskey lacks resource ownership validation
Weaknesses CWE-639
CWE-862
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-10T14:44:15.691Z

Reserved: 2026-02-27T15:54:05.138Z

Link: CVE-2026-28433

cve-icon Vulnrichment

Updated: 2026-03-10T14:44:04.804Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-10T07:43:35.907

Modified: 2026-03-11T13:53:47.157

Link: CVE-2026-28433

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-10T14:06:56Z

Weaknesses