CVE-2026-17552 Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUEST_URI concatenation in call

Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUESTURI concatenation in call. When the rewrite base is a plain string, the REQUESTURI is appended to it, with no check that the path starts with a forward slash '/'. When the rewrite base does...

CVE-2026-17552

CVE-2026-17552 affects Plack::App::Prerender for Perl prior to 0.3.0. The flaw arises from unvalidated REQUEST_URI concatenation when the rewrite base is a plain string or lacks a path, allowing an attacker to alter the hostname (e.g., via a request like GET @192.168.1.2/) and proxy requests to i...