{"cve":"CVE-2026-118235","nvd":{"published":"2026-10-31T09:16:33.620","modified":"2026-10-31T09:16:33.620","status":"Received","description":"The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 3.10.2 via the handle_upload function. This is due to missing server-side file key allowlist and pre-sanitization extension derivation that allows a trailing-dot filename to bypass all extension and MIME validation in handle_upload. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The only access control is a nonce that is printed into every public form's data-nonce attribute, making it trivially obtainable by any unauthenticated visitor on a page embedding the form shortcode.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-434"],"references":["https://plugins.svn.wordpress.org/simple-form/trunk/","https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L67","https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L973","https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L988","https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L118"],"products":[],"source":"nvd","synced_at":"2026-10-31T09:39:03.416545639+00:00"},"epss":null,"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}