CVE-2026-46712
lowpriority · track · 0EPSS 0.004 · 30 %ileEUEPSS · scored 2026-10-26
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (1)
Products and version ranges known to be affected.
also known as (2)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (6)
External citations — patches, advisories, analysis.
- https://github.com/misskey-dev/misskey/releases/tag/2026.5.4cnnvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m3r-xx7x-63j6cnnvd
- https://github.com/misskey-dev/misskey/releases/tag/2026.5.4enisa_euvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m3r-xx7x-63j6enisa_euvd
- https://github.com/misskey-dev/misskey/releases/tag/2026.5.4nvd
- https://github.com/misskey-dev/misskey/security/advisories/GHSA-2m3r-xx7x-63j6nvd
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