CVE-2026-82901
Ultra Addons for Contact Form 7 <= 3.5.50 - Unauthenticated Arbitrary File Upload via Signature Form Field
themefic Ultra Addons for Contact Form 7
CVSS
9.8CriticalExploit odds (EPSS)1.11%Chance of exploitation activity in the next 30 days, higher than 65% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
What fixes it
No source in this snapshot names a fixed version.
Public exploit code and templates 1
- Scanner templateUltimate Addons for Contact Form 7 <= 3.5.50 - Arbitrary File UploadNuclei
Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.
Description
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Arbitrary File Upload due to insufficient file type validation in the 'uacf7_wpcf7_mail_components' function in all versions up to, and including, 3.5.50. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. Note: This is only exploitable when the plugin's PDF Generator module is enabled, which is disabled by default.
Text from CVE List
Affected versions 1
- Ultra Addons for Contact Form 7affected: all versions through 3.5.50CVE List
References 7
- wordfence.com/threat-intel/vulnerabilities/id/872e1a05-aacc-44fa-93c1-8c3f7b2fb46d?source=cveReferencevia CVE List
- plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L133Referencevia CVE List
- plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L192Referencevia CVE List
- plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L300Referencevia CVE List
- plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L608Referencevia CVE List
- plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L807Referencevia CVE List
- plugins.trac.wordpress.org/changeset/3698232/ultimate-addons-for-contact-form-7Referencevia CVE List