CVE-2024-9891Network attack vector

Subscriber-level plugin deactivation via missing capability check

Published Oct 16, 2024 · Updated Apr 8, 2026

Missing authorization in Zluck Solutions MultiLine Files for Contact Form 7 2.8.1 and earlier allows remote authenticated users to deactivate it. The mfcf7_zl_custom_handle_deactivation_plugin_form_submission function processes a deactivation feedback submission without checking the caller's capability. Subscriber-level access is sufficient to interrupt the plugin's multiple-file upload functionality and send a custom reason from the site.

CVSS severity4.3
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Zluck Solutions MultiLine Files for Contact Form 7 2.8.1 and earlier allows remote authenticated users to deactivate it. The mfcf7_zl_custom_handle_deactivation_plugin_form_submission function processes a deactivation feedback submission without checking the caller's capability. Subscriber-level access is sufficient to interrupt the plugin's multiple-file upload functionality and send a custom reason from the site.

The record

CVE
CVE-2024-9891
Published
Oct 16, 2024
Updated
Apr 8, 2026
Vendor
Zluck Solutions
Product
MultiLine Files for Contact Form 7
Classifications
CWE-862, T1489
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.8.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Zluck Solutions · MultiLine Files for Contact Form 7version=0 <=2.8.1

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1489Service Stop

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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