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

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.

Scores

EPSS (exploitation in 30 days)

0.34% · top 72% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• CWE-862 Missing Authorization (opens in a new tab)All about CWE-862 and its CVEs

Affected products

• zluck · MultiLine Files for Contact Form 7

  • affected ≤ 2.8.1

References (3)

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

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-9891](https://trackcve.app/badge/CVE-2024-9891.svg)](https://trackcve.app/cve/CVE-2024-9891)

Record last updated 8 Apr 2026, 16:55 UTC.