CVE-2024-32983 HIGH

CVE-2024-32983: Misskey allows the impersonation and takeover of remote accounts with unnormalized signed activities

Vendor Misskey-Dev
Product misskey
Weakness CWE-863 · Incorrect authorization
Published June 3, 2024
Last update August 2, 2024
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 3, 2024 CVE published
August 2, 2024 Record updated