---
id: CVE-2026-82901
title: >-
  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
summary: >-
  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 mak…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
vendor: themefic
product: Ultra Addons for Contact Form 7
affected:
  - ultra_addons_for_contact_form_7 <= 3.5.50
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T23:16:37.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82901'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L608
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/pdf-generator/pdf-generator.php#L807
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L133
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L192
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/ultimate-addons-for-contact-form-7/tags/3.5.48/addons/signature/ultimate-signature.php#L300
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3698232/ultimate-addons-for-contact-form-7
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/872e1a05-aacc-44fa-93c1-8c3f7b2fb46d?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-26T22:44:38.206067Z'
ingestedAt: '2026-09-26T18:36:42.664Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.