CVE-2024-32983: Misskey

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.

Affected products

• Misskey Misskey: before 2024.5.0 (fixed in 2024.5.0)

Published 2024-06-03. Last modified 2026-06-17.