What’s Vulnerable › Vulnerabilities

CVE-2024-1640: Contact Form Builder Plugin: Multi Step Contact Form, Payment Form, Custom Contact Form Plugin by Bit Form <= 2.10.1 - Unauthenticated Insecure Direct Object Reference to Form Submission Alteration

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-13 · updated 2026-06-17
• Weakness: CWE-639

Description

The Contact Form Builder Plugin: Multi Step Contact Form, Payment Form, Custom Contact Form Plugin by Bit Form plugin for WordPress is vulnerable to unauthorized modification of data due to a insufficient user validation on the bitforms_update_form_entry AJAX action in all versions up to, and including, 2.10.1. This makes it possible for unauthenticated attackers to modify form submissions.

Affected products

• bitpressadmin Bit Form – Custom Contact Form, Multi Step, Conversational Form & Payment Form builder: before 2.10.2 — fixed in 2.10.2

How to fix

Upgrade to a fixed version: bitpressadmin Bit Form – Custom Contact Form, Multi Step, Conversational Form & Payment Form builder 2.10.2. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cve
• https://plugins.trac.wordpress.org/changeset/3048523/bit-form/trunk/includes/Frontend/Ajax/FrontendAjax.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/49ed7d6a-4a65-4efc-90e5-ffa5470d4011?source=cve

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