Description

Misskey is an open source, federated social media platform. All Misskey servers running versions 8.45.0 and later, but prior to 2026.3.1, contain a vulnerability that allows bad actors access to data that they ordinarily wouldn't be able to access due to insufficient permission checks and proper input validation. This vulnerability occurs regardless of whether federation is enabled or not. This vulnerability could lead to a significant data breach. This vulnerability is fixed in 2026.3.1.

INFO

Published Date :

2026-03-09T21:17:32.572Z

Last Modified :

2026-03-10T14:47:51.022Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-28431 vulnerability.

Vendors Products
Misskey
  • Misskey
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-28431.

URL Resource
https://github.com/misskey-dev/misskey/security/advisories/GHSA-r33c-qg3g-v9cr cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact