CVE-2026-17552

Περιγραφή

Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUEST_URI concatenation in call. When the rewrite base is a plain string, the REQUEST_URI is appended to it, with no check that the path starts with a forward slash (-/-). When the rewrite base does not contain a path (which is the standard given in the SYNOPSIS), an attacker can create a request that changes the hostname. A request target starting with an at-sign (-@-) changes the base to a RFC 3986 userinfo component. For example, a rewrite base of -https://example.com- with the submitted request -GET @192.168.1.2/- will send a request to -https://example.com@192.168.1.2/-, with the rendered content returned to the attacker. This allows an attacker to access internal or restricted hosts that only the webserver has access to.