CVE-2025-22870

PoC – CVE-2025-22870 – HTTP Proxy Bypass via IPv6 Zone ID in Go Summary This Proof of Concept demonstrates the exploitation of CVE-2025-22870, a vulnerability in the golang.org/x/net/http/httpproxy package prior to v0.36.0, which can be used to bypass HTTP proxy restrictions by abusing the way IP...

CVE-2025-22870

Matching of hosts against proxy patterns can improperly treat an IPv6 zone ID as a hostname component. For example, when the NOPROXY environment variable is set to ".example.com", a request to "::1%25.example.com:80 will incorrectly match and not be proxied...