{"id":"CVE-2026-120633","published":"2026-11-04T00:17:24.450","lastModified":"2026-11-04T00:17:24.450","description":"CGI versions before 5.00 for Perl trust the client X-Forwarded-Host header in url, self_url, virtual_host and virtual_port.\n\nThese take the host name and port from the X-Forwarded-Host request header when present, and otherwise from Host, without validating either. The URLs from url and self_url are the default redirect location and the start_html(-base=>1) base href, and the default start_form action when REQUEST_URI is not set.\n\nA client can poison shared caches, and URLs the application stores or sends, with redirects, links and scripts that point at a host it controls.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-348","CWE-601"],"vendors":[],"products":[],"references":[{"url":"https://github.com/leejo/CGI.pm/commit/d76752a5e8dfd365b0fe3a0b9a7da6c054e856af.patch","tags":[]},{"url":"https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm","tags":[]},{"url":"https://metacpan.org/release/LEEJO/CGI-5.00/changes","tags":[]}],"exploitRefs":[{"url":"https://github.com/leejo/CGI.pm/commit/d76752a5e8dfd365b0fe3a0b9a7da6c054e856af.patch","tags":[]}],"hasPoc":true,"ai":null}