CVE-2026-46712

LowCVSS 2.3

Published: 03/08/2026(UTC)Updated: 04/08/2026(UTC)Translated: 04/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.22%

12th percentile - higher than 12% of all known CVEs

Summary

Misskey versions 2025.3.2 up to (but not including) 2026.5.4 have a missing permission check that allows access to certain Direct Messages data regardless of account permissions. Notes with 'specified' visibility are not affected. Fixed in version 2026.5.4.

Risk Assessment

Risk of unauthorized access to private user messages, compromising communication confidentiality.

Recommendation

Upgrade Misskey to version 2026.5.4 or later immediately.

Original NVD description (English source)

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.