Misskey is an open source, federated social media platform.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Dec 16, 2025 · NIST NVD

   Detected

   Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue.

2. Oct 14, 2026 · NIST NVD

   Updated

   Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue.

Affected

• cpe misskey/misskeyversion unspecified
• cpe misskey/misskey13.0.0

Sources

• CVE.orgVulnerability recordCVE-2025-66402

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2025-66402

  30-day exploitation probability 0.3%

  first.org
• NIST NVDVulnerability recordCVE-2025-66402

  Misskey is an open source, federated social media platform. Starting in version 13.0.0-beta.16 and prior to version 2025.12.0, an actor who does not have permission to view favorites or clips can can export the posts and view the contents. Version 2025.12.0 fixes the issue.

  nvd.nist.gov

References

• Patch · github.com
• Exploit · github.com