CVE-2024-32983

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.

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS v3.1

8.2 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N

EPSS

0.40% chance of exploitation in the next 30 days, 33th percentile

Published

2024-06-03

Updated

2024-08-02

Proof-of-concept exploits (1)

• misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvj

References

• CVE Record
• NVD entry

Related

• CVE-2025-46559
• CVE-2024-32982
• CVE-2024-3300
• CVE-2024-32977
• CVE-2024-3303
• CVE-2024-32976