Low severity · published Aug 3, 2026
CVE-2026-46712
Misskey: Lack of proper permission checks in Direct Messaging feature
2.3
CVSS
0.4%
EPSS
No
On KEV
Description
Misskey is an open source, federated social media platform. Versions 2025.3.2 and later, but prior to 2026.5.4, contain a vulnerability where a lack of proper permission checks allows access to certain data points from the Direct Messages (formerly Chat) feature, regardless of account permissions. This vulnerability occurs whether or not federation is enabled. Notes created with "specified" visibility (formerly "direct" visibility) are not affected. This issue has been fixed in version 2026.5.4.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
misskey · misskey-dev
>= 2025.3.2, < 2026.5.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46712
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46712
github.com
https://github.com/misskey-dev/misskey/releases/tag/2026.5.4
github.com
https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m3r-xx7x-63j6
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