{"id":"CVE-2026-120645","title":"CGI versions before 5.00 for Perl allow denial of service via submitted values used as a regex for optgroup selection in scrolling_list","summary":"CGI versions before 5.00 for Perl allow denial of service via submitted values used as a regex for optgroup selection in scrolling_list.\n\nWhen rendering option groups, scrolling_list marks the selected options by interpolating each selec…","severity":"none","cwe":["CWE-1333","CWE-625"],"product":"CGI","affected":["CGI < 5.00"],"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T23:40:54.754Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120645","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/824956fbb0c4eb77044ba2dc9180a30df12cb309.patch"}],"tags":["cve.org"],"epss":0.00389,"epssPercentile":0.33129,"ingestedAt":"2026-11-05T20:33:06.617Z","slug":"CVE-2026-120645","body":"## Overview\n\nCGI versions before 5.00 for Perl allow denial of service via submitted values used as a regex for optgroup selection in scrolling_list.\n\nWhen rendering option groups, scrolling_list marks the selected options by interpolating each selected value, by default taken from the request parameters, unescaped into a substitution pattern.\n\nA client can make the request die with an invalid pattern, or tie up the process with one that backtracks heavily.\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":0.1,"exploitation":0,"ransomware":0},"changes":[]}