{"id":"CVE-2026-120636","title":"CGI versions before 5.00 for Perl allow open redirects and script injection via URLs built from REQUEST_URI in url and start_form","summary":"CGI versions before 5.00 for Perl allow open redirects and script injection via URLs built from REQUEST_URI in url and start_form.\n\nurl(-absolute=>1), url(-relative=>1) and the default start_form action are built from the client-supplied…","severity":"none","cwe":["CWE-601","CWE-79"],"product":"CGI","affected":["CGI < 5.00"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T23:40:18.085Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120636","references":[{"url":"https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm"},{"url":"https://metacpan.org/release/LEEJO/CGI-5.00/changes"},{"url":"https://github.com/leejo/CGI.pm/commit/9405ef3909ee94991a3474167aa53b9051bd8765.patch"}],"tags":["cve.org"],"epss":0.00212,"epssPercentile":0.1163,"ingestedAt":"2026-11-05T20:33:06.617Z","slug":"CVE-2026-120636","body":"## Overview\n\nCGI versions before 5.00 for Perl allow open redirects and script injection via URLs built from REQUEST_URI in url and start_form.\n\nurl(-absolute=>1), url(-relative=>1) and the default start_form action are built from the client-supplied REQUEST_URI without validation. The result can be protocol-relative (//evil.example), absolute-form (http://evil.example/) or contain backslashes, and url(-relative=>1) can return a javascript: URL. Links and form posts built from these URLs can go to another host.\n\n## Affected\n\n- `CGI < 5.00`\n\n## Remediation\n\nUpgrade to CGI 5.00 or later.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}