Input validation error in Misskey - CVE-2024-32983
Published: June 2, 2024 / Updated: April 28, 2026
Vulnerability identifier: #VU128329
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2024-32983
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Misskey
Misskey
Software vendor:
Misskey Development Division
Misskey Development Division
Description
The vulnerability allows a remote attacker to impersonate remote accounts and perform spoofed activities.
The vulnerability exists due to improper input validation in incoming signed ActivityPub activity object processing when handling signed ActivityPub activities. A remote attacker can submit a specially crafted signed activity object to impersonate remote accounts and perform spoofed activities.
Exploitation requires access to a valid Linked Data Signature by the target account.
Remediation
Install security update from vendor's website.