{"action":"Upgrade handlebars to 3.0.8 or later.","affected":[{"fixed":"4.3.0","introduced":"4.0.0"},{"fixed":"3.0.8","introduced":"0"}],"component":"handlebars","cve_ids":["CVE-2019-19919"],"ecosystem":"npm","epss":0.07066,"exploited":false,"fixed_versions":["4.3.0","3.0.8"],"ghsa_id":"GHSA-w457-6q6x-cgp9","id":"tcs_01M5KENSGTB63ZGXPHH9MCF26S","modified_at":"2026-09-10T03:49:25.089815783Z","published_at":"2019-12-26T17:58:13Z","references":["https://osv.dev/vulnerability/GHSA-w457-6q6x-cgp9","https://nvd.nist.gov/vuln/detail/CVE-2019-19919","https://github.com/wycats/handlebars.js/issues/1558","https://github.com/handlebars-lang/handlebars.js/commit/156061eb7707575293613d7fdf90e2bdaac029ee","https://github.com/handlebars-lang/handlebars.js/commit/90ad8d97ad2933852fb83fcc054699dc99e094db","https://github.com/wycats/handlebars.js/commit/2078c727c627f25d4a149962f05c1e069beb18bc","https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19919","https://github.com/Nerian/bootstrap-wysihtml5-rails/blob/master/vendor/assets/javascripts/bootstrap-wysihtml5/handlebars.runtime.min.js","https://github.com/Nerian/bootstrap-wysihtml5-rails/tree/master/vendor/assets/javascripts/bootstrap-wysihtml5","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/bootstrap-wysihtml5-rails/CVE-2019-19919.yml","https://github.com/wycats/handlebars.js","https://www.tenable.com/security/tns-2021-14"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-w457-6q6x-cgp9","url":"https://osv.dev/vulnerability/GHSA-w457-6q6x-cgp9"}],"summary":"Prototype Pollution in handlebars"}