CVE-2023-5386 - CVE House

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Status published Medium CVE-2023-5386

Funnelforms Free <= 3.4 - Missing Authorization to Arbitrary Post Deletion

6.5 CVSS

Vulnerability Description

The Funnelforms Free plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the fnsf_delete_posts function in versions up to, and including, 3.4. This makes it possible for authenticated attackers, with subscriber-level permissions and above, to delete arbitrary posts, including administrator posts, and posts not related to the Funnelforms Free plugin. CVE-2023-5990 appears to be a duplicate of this issue.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Alex Thomas
Duc Manh

References

More from funnelforms

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Interactive Contact Form and Multi Step Form Builder with Drag & Drop Editor – Funnelforms Free <= 3.7.3.2 - Missing Authorization to Unauthenticated Arbitrary Media Upload

Funnelforms Free <= 3.7.3.2 - Authenticated (Administrator+) Arbitrary File Deletion

Funnelforms Free <= 3.7.3.2 - Authenticated (Administrator+) Arbitrary File Upload

Interactive Contact Form and Multi Step Form Builder with Drag & Drop Editor – Funnelforms Free <= 3.7.3.2 - Missing Authorization to Unauthenticated Arbitrary Media Deletion

Funnelforms Free <= 3.7.5.1 - Authenticated (Contributor+) PHP Object Injection

Affected Vendor

funnelforms

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Affected Software

Interactive Contact Form and Multi Step Form Builder with Drag & Drop Editor – Funnelforms Free

Vulnerable Versions:

0

Timeline

Official Publish: November 22nd, 2023

Last Modified: April 8th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1068 Exploitation for Privilege Escalation

Privilege Escalation

T1078 Valid Accounts

T1531 Account Access Removal