{"id":"CVE-2026-118235","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-118235","generatedAt":"2026-11-04T11:42:48.060Z","title":"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.","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.","published":"2026-10-31T09:16:34.000Z","lastModified":"2026-11-02T16:19:20.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-434"],"affected":[],"epss":{"score":0.0074,"percentile":0.54643,"date":"2026-11-03","history":[{"date":"2026-10-31","score":0.0074,"percentile":0.54613}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.74%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-31T09:16:34.000Z","detail":{"score":"9.8","severity":"CRITICAL","publishedAt":"2026-10-31T09:16:33.620Z"},"summary":"New CVE, critical severity (CVSS 9.8)."}],"references":[{"url":"https://plugins.svn.wordpress.org/simple-form/trunk/","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L67","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L973","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/Ajax/Tables.php#L988","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L118","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L137","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.2/app/FileUpload.php#L142","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset/3770697/simple-form/trunk/app/FileUpload.php","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/6aac2178-f6ce-4444-9afc-7e014547cd48?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-118235","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}