{"id":"CVE-2026-15256","aliases":["EUVD-2026-54201","GHSA-2xwp-m9v6-767p"],"status":"published","title":"Ninja Forms \u003c 3.14.10 - Unauthenticated Arbitrary Shortcode Execution via Query-String Populated Field Default","description":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.","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":"2026-11-10","score":0.00243,"percentile":0.15587,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2026-08-06T17:14:40Z","modified":"2026-08-26T16:31:16Z","products":[{"vendor":"unknown","product":"ninja forms"}],"references":[{"url":"https://wpscan.com/vulnerability/9c96f977-c105-4b45-a3cd-4751fb4aa5a1/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15256"},{"url":"https://wpscan.com/vulnerability/9c96f977-c105-4b45-a3cd-4751fb4aa5a1"},{"url":"https://github.com/advisories/GHSA-2xwp-m9v6-767p"}],"sources":{"cve":[{"id":"CVE-2026-15256","title":"Ninja Forms \u003c 3.14.10 - Unauthenticated Arbitrary Shortcode Execution via Query-String Populated Field Default","description":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.","status":"published","published":"2026-08-06T17:14:40.246Z","modified":"2026-08-07T14:14:16.223Z","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":"2026-11-02T13:47:39.876248Z"}],"euvd":[{"id":"EUVD-2026-54201","description":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.","status":"published","published":"2026-08-06T17:14:40Z","modified":"2026-08-07T14:14:16Z","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":"2026-11-02T18:02:07.294457Z"}],"ghsa":[{"id":"GHSA-2xwp-m9v6-767p","title":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input...","description":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.","status":"published","published":"2026-08-07T00:31:14Z","modified":"2026-08-07T15:33:10Z","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":"2026-11-02T15:10:11.66732Z"}],"nvd":[{"id":"CVE-2026-15256","description":"The Ninja Forms WordPress plugin before 3.14.10 does not prevent user-supplied query-string input, used to pre-populate a form field's default value, from being processed as a shortcode, allowing unauthenticated attackers to execute arbitrary shortcodes registered on the site when a form so configured is embedded on a public page.","status":"published","published":"2026-08-06T22:16:48.04Z","modified":"2026-08-26T16:31:16.753Z","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":"2026-11-02T14:12:35.386166Z"}]}}