Federated Social Media Platform Misskey Exposes User Data Due to Inadequate Permissions
CVE-2026-46712

2.3LOW

Key Information:

Vendor

Misskey-dev

Status
Misskey
Vendor
CVE Published:
3 August 2026

What is CVE-2026-46712?

Misskey, an open-source federated social media platform, has a vulnerability in its Direct Messages feature that enables unauthorized access to sensitive data. This issue arises from inadequate permission checks in versions 2025.3.2 to 2026.5.4. Even with federation disabled, certain data points may be accessed without proper user authentication, exposing potentially private information. The vulnerability does not affect notes marked with specified visibility. Users are encouraged to upgrade to version 2026.5.4 or later to mitigate this risk.

Affected Version(s)

misskey >= 2025.3.2, < 2026.5.4

References

https://github.com/misskey-dev/misskey/security/advisorie...
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https://github.com/misskey-dev/misskey/releases/tag/2026.5.4
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CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.