curl: curl leaks destination IP via glibc getaddrinfo() UDP connect, bypassing SOCKS5/Tor

Summary: When using curl with a SOCKS5 proxy e.g. Tor on 127.0.0.1:9050, glibc getaddrinfo performs direct UDP connect probes to the target’s IP:443. These syscalls bypass the proxy and expose the user’s route to the destination, breaking anonymity expectations. The IPs I got in my case:...

CVE-2025-6432 DNS Requests leaked outside of a configured SOCKS proxy

When Multi-Account Containers was enabled, DNS requests could have bypassed a SOCKS proxy when the domain name was invalid or the SOCKS proxy was not responding. This vulnerability was fixed in Firefox 140 and Thunderbird 140...