{"action":"Upgrade webrick to 1.4.0 or later.","affected":[{"fixed":"1.4.0","introduced":"0"}],"component":"webrick","cve_ids":["CVE-2009-4492"],"ecosystem":"RubyGems","epss":0.1623,"exploited":false,"fixed_versions":["1.4.0"],"ghsa_id":"GHSA-6mq2-37j5-w6r6","id":"tcs_01M5KEHCRPH646XR96KA7XE64K","modified_at":"2025-05-22T17:48:00.252889Z","published_at":"2017-10-24T18:33:38Z","references":["https://osv.dev/vulnerability/GHSA-6mq2-37j5-w6r6","https://nvd.nist.gov/vuln/detail/CVE-2009-4492","https://github.com/advisories/GHSA-6mq2-37j5-w6r6","https://github.com/ruby/webrick","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/webrick/CVE-2009-4492.yml","https://web.archive.org/web/20100113155532/http://www.vupen.com/english/advisories/2010/0089","https://web.archive.org/web/20100815010948/http://secunia.com/advisories/37949","https://web.archive.org/web/20170402100552/http://securitytracker.com/id?1023429","https://web.archive.org/web/20170908140655/http://www.securityfocus.com/archive/1/508830/100/0/threaded","https://web.archive.org/web/20200228145937/http://www.securityfocus.com/bid/37710","http://www.redhat.com/support/errata/RHSA-2011-0908.html","http://www.redhat.com/support/errata/RHSA-2011-0909.html","http://www.ruby-lang.org/en/news/2010/01/10/webrick-escape-sequence-injection","http://www.ush.it/team/ush/hack_httpd_escape/adv.txt"],"severity":{"label":"medium"},"sources":[{"source":"osv","source_id":"GHSA-6mq2-37j5-w6r6","url":"https://osv.dev/vulnerability/GHSA-6mq2-37j5-w6r6"}],"summary":"WEBrick Improper Input Validation vulnerability"}