{"id":"CVE-2026-19857","aliases":["EUVD-2026-80218","GHSA-hgfq-v6h8-89x5"],"status":"published","title":"Formidable Forms \u003c 6.35 - Unauthenticated Arbitrary Shortcode Execution via [entry_key] Custom HTML Token","description":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00229,"percentile":0.13866,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2026-09-16T06:30:05Z","modified":"2026-09-16T20:25:29Z","products":[{"vendor":"unknown","product":"formidable forms"}],"references":[{"url":"https://wpscan.com/vulnerability/5ff439f4-aa99-4198-b908-0cf098656cf7/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19857"},{"url":"https://wpscan.com/vulnerability/5ff439f4-aa99-4198-b908-0cf098656cf7"},{"url":"https://github.com/advisories/GHSA-hgfq-v6h8-89x5"}],"sources":{"cve":[{"id":"CVE-2026-19857","title":"Formidable Forms \u003c 6.35 - Unauthenticated Arbitrary Shortcode Execution via [entry_key] Custom HTML Token","description":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.","status":"published","published":"2026-09-16T06:30:05.888Z","modified":"2026-09-16T17:40:30.151Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T13:47:17.512524Z"}],"euvd":[{"id":"EUVD-2026-80218","description":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.","status":"published","published":"2026-09-16T06:30:05Z","modified":"2026-09-16T17:40:30Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:15.055852Z"}],"ghsa":[{"id":"GHSA-hgfq-v6h8-89x5","title":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from...","description":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.","status":"published","published":"2026-09-16T09:30:24Z","modified":"2026-09-16T18:31:57Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:12:00.76854Z"}],"nvd":[{"id":"CVE-2026-19857","description":"The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.","status":"published","published":"2026-09-16T07:16:36.72Z","modified":"2026-09-16T20:25:29.24Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:12:48.287983Z"}]}}