Uncontrolled Recursion in Misskey - CVE-2024-49363
Published: December 18, 2024 / Updated: April 28, 2026
Vulnerability identifier: #VU128333
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-49363
CWE-ID: CWE-674
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 cause a denial of service.
The vulnerability exists due to uncontrolled recursion in FileServerService.prototype.proxyHandler when processing nested proxy requests with a malicious redirect loop. A remote attacker can send a maliciously crafted note to cause a denial of service.
Instances with an external media proxy configured are also affected.
How to mitigate CVE-2024-49363
Install security update from vendor's website.