{"id":"CVE-2026-15748","aliases":["EUVD-2026-60569","GHSA-3p88-69p6-f6mj"],"status":"published","title":"Forminator Forms \u003c= 1.56.1 - Unauthenticated Arbitrary File Upload via Forged Upload Field Configuration","description":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.04088,"percentile":0.90811,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2026-08-18T05:31:20Z","modified":"2026-10-22T22:10:00Z","exploits":[{"source":"pocgithub","id":"0x4cr/CVE-2026-15748","title":"0x4cr/CVE-2026-15748","date":"2026-10-11","url":"https://github.com/0x4cr/CVE-2026-15748"},{"source":"pocgithub","id":"ubaydev/CVE-2026-15748","title":"ubaydev/CVE-2026-15748","date":"2026-08-19","url":"https://github.com/ubaydev/CVE-2026-15748"},{"source":"pocgithub","id":"yora1928/cve-2026-15748","title":"yora1928/cve-2026-15748","date":"2026-08-18","url":"https://github.com/yora1928/cve-2026-15748"}],"products":[{"vendor":"wpmudev","product":"forminator forms – contact form, payment form \u0026 custom form builder"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/263ac05d-f1ca-46e3-a43e-3b45eb8066d4?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/fields/upload.php#L552"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L2767"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L738"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/helpers/helper-fields.php#L3425"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/abstracts/abstract-class-field.php#L2308"},{"url":"https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/admin/classes/class-admin-ajax.php#L1196"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-15748"},{"url":"https://github.com/advisories/GHSA-3p88-69p6-f6mj"}],"sources":{"cve":[{"id":"CVE-2026-15748","title":"Forminator Forms \u003c= 1.56.1 - Unauthenticated Arbitrary File Upload via Forged Upload Field Configuration","description":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.","status":"published","published":"2026-08-18T05:31:20.458Z","modified":"2026-08-18T15:28:02.73Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T13:47:39.876248Z"}],"euvd":[{"id":"EUVD-2026-60569","description":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.","status":"published","published":"2026-08-18T05:31:20Z","modified":"2026-08-18T15:28:02Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:01:46.405062Z"}],"ghsa":[{"id":"GHSA-3p88-69p6-f6mj","title":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions...","description":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.","status":"published","published":"2026-08-18T06:31:48Z","modified":"2026-08-18T06:31:55Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:10:35.792698Z"}],"nvd":[{"id":"CVE-2026-15748","description":"The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.","status":"published","published":"2026-08-18T06:16:40.67Z","modified":"2026-10-22T22:10:00.25Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:38.647684Z"}]}}