CVE-2024-9891: CWE-862 Missing Authorization in zluck MultiLine Files for Contact Form 7
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.
AI Analysis
Technical Summary
CVE-2024-9891 describes a missing authorization vulnerability in the MultiLine Files for Contact Form 7 plugin for WordPress. The function mfcf7_zl_custom_handle_deactivation_plugin_form_submission() lacks a capability check, enabling authenticated users with low privileges (Subscriber and above) to deactivate the plugin and provide a custom reason. This vulnerability affects all versions up to and including 2.8.1. The CVSS v3.1 base score is 4.3, indicating a medium severity issue with network attack vector, low attack complexity, and requiring low privileges but no user interaction.
Potential Impact
An attacker with Subscriber-level access or higher can deactivate the MultiLine Files for Contact Form 7 plugin on a vulnerable WordPress site. This could disrupt functionality dependent on the plugin, potentially impacting site operations or user experience. There is no direct confidentiality or availability impact beyond the plugin deactivation, and no known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or patch links are provided. Users should monitor the vendor's advisory for updates and apply any official patches once available. Until then, restrict Subscriber-level access where possible and review user permissions to limit the risk of unauthorized plugin deactivation.
CVE-2024-9891: CWE-862 Missing Authorization in zluck MultiLine Files for Contact Form 7
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-9891 describes a missing authorization vulnerability in the MultiLine Files for Contact Form 7 plugin for WordPress. The function mfcf7_zl_custom_handle_deactivation_plugin_form_submission() lacks a capability check, enabling authenticated users with low privileges (Subscriber and above) to deactivate the plugin and provide a custom reason. This vulnerability affects all versions up to and including 2.8.1. The CVSS v3.1 base score is 4.3, indicating a medium severity issue with network attack vector, low attack complexity, and requiring low privileges but no user interaction.
Potential Impact
An attacker with Subscriber-level access or higher can deactivate the MultiLine Files for Contact Form 7 plugin on a vulnerable WordPress site. This could disrupt functionality dependent on the plugin, potentially impacting site operations or user experience. There is no direct confidentiality or availability impact beyond the plugin deactivation, and no known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — no official fix or patch links are provided. Users should monitor the vendor's advisory for updates and apply any official patches once available. Until then, restrict Subscriber-level access where possible and review user permissions to limit the risk of unauthorized plugin deactivation.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2024-10-11T19:42:32.759Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6b63b7ef31ef0b554e6b
Added to database: 2/25/2026, 9:36:35 PM
Last enriched: 4/9/2026, 3:38:47 PM
Last updated: 4/12/2026, 12:24:11 PM
Views: 18
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