#VU120191 Input validation error in idna - CVE-2024-12224
Published: December 18, 2025
Vulnerability identifier: #VU120191
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2024-12224
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
idna
idna
Software vendor:
Rust Team
Rust Team
Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to an error within the UTS 46 specification when handling Punycode labels that do not produce any non-ASCII output. A remote attacker can construct a specially crafted hostname that one part of a system might treat as distinct while another part of that system would treat as equivalent to another hostname.
Remediation
Install updates from vendor's website.