CVE-2026-46712 Misskey: Lack of proper permission checks in Direct Messaging feature
Attackers can access restricted Direct Message data in Misskey due to missing permission checks, regardless of account permissions or federation settings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-46712?
CVE-2026-46712 is a low-severity missing authorization vulnerability in misskey-dev misskey, published on 3 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-639
Which versions are affected by CVE-2026-46712?
How do I fix CVE-2026-46712?
No fix has been published for CVE-2026-46712 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-46712 being exploited?
There is no known exploitation of CVE-2026-46712 in the wild and no public exploit code.
Sources
Also known as GHSA-2m3r-xx7x-63j6.