What’s Vulnerable › Vulnerabilities

CVE-2024-9891: Multiline files upload for contact form 7 <= 2.8.1 - Missing Authorization to Authenticated (Subscriber+) Plugin Deactivation

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-16 · updated 2026-06-17
• Weakness: CWE-862

Description

The Multiline files upload for contact form 7 plugin for WordPress is vulnerable to unauthorized plugin deactivation due to a missing capability check on the mfcf7_zl_custom_handle_deactivation_plugin_form_submission() function in all versions up to, and including, 2.8.1. This makes it possible for authenticated attackers, with Subscriber-level access and above, to deactivate the plugin and send a custom reason from the site.

Affected products

• zluck MultiLine Files for Contact Form 7: through 2.8.1

References

• https://plugins.trac.wordpress.org/changeset/3169228/
• https://plugins.trac.wordpress.org/tags/2.8.1/multiline-files-for-contact-form-7/multiline-admin.php#L410
• https://www.wordfence.com/threat-intel/vulnerabilities/id/5cf62f45-a142-497e-9838-ce0b1b1bb3d3?source=cve

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