CVE-2026-28433

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.

PUBLISHED Reserved 2026-02-27 | Published 2026-03-09 | Updated 2026-03-10 | Assigner GitHub_M

Problem types

CWE-639: Authorization Bypass Through User-Controlled Key

CWE-862: Missing Authorization

Product status

References

github.com/...isskey/security/advisories/GHSA-g6hj-33h7-6fq8

cve.org (CVE-2026-28433)

nvd.nist.gov (CVE-2026-28433)

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