Vulnerabilities / Multiline files upload for contact form 7 / WPSEC-2026-0293
Multiline files upload for contact form 7 <= 3.1.0 - Cross-Site Request Forgery to Plugin Deactivation
Medium 4.3
CWE-352Fixed in 3.1.1
- ID
- WPSEC-2026-0293
- Plugin
- MultiLine Files for Contact Form 7 (multiline-files-for-contact-form-7)
- Affected
- from 2.8 before 3.1.1
- Remediation
- Update to 3.1.1 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- Weakness
- CWE-352
- Usage
- Plugin Medium · Affected versions Low among sites WPSec scans, 2026-10-22
- Attack surface
- Multiline files upload for contact form 7 on WPSec AttackSurface
- Fix released
- Published
Description
The MultiLine Files for Contact Form 7 plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions 2.8 up to, and including, 3.1.0 due to missing nonce validation on the 'deactive_plugin_without_feedback' AJAX action. This makes it possible for unauthenticated attackers to set the plugin's deactivation request option, which causes the plugin to deactivate itself on the next admin page load, via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
References
- https://wpsec.com/vuln/WPSEC-2026-0293/
- https://plugins.svn.wordpress.org/multiline-files-for-contact-form-7/tags/3.1.1/
- https://wordpress.org/plugins/multiline-files-for-contact-form-7/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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