Improper access control in Misskey - CVE-2024-52592
Published: December 18, 2024 / Updated: April 28, 2026
Vulnerability identifier: #VU128332
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-52592
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Misskey Development Division
Affected software:
Misskey
Misskey
Detailed vulnerability description
The vulnerability allows a remote attacker to modify poll results belonging to another user.
The vulnerability exists due to improper access control in ApInboxService.update when handling update messages for remote polls. A remote attacker can send a spoofed update with a valid signature from any actor on any remote instance to modify poll results belonging to another user.
Only remote polls are affected; local polls are unaffected.
How to mitigate CVE-2024-52592
Install security update from vendor's website.