PT-2026-67526 · Misskey Dev · Misskey

CVE-2026-46712 · Published 2026-08-03 · Updated 2026-08-03

Mitre

CVSS v4.0

2.3

Low

Base vector

AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

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.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-46712

Affected Products

Misskey

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-46712 · Security Note
• https://github.com/misskey-dev/misskey/releases/tag/2026.5.4 · Note
• https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m3r-xx7x-63j6 · Note