Contact Form by Bit Form: Multi Step Form, Calculation Contact Form, Payment Contact Form & Custom Contact Form builder 2.0 - 2.13.9 - Authenticated (Administrator+) Arbitrary JavaScript File Uploads
Strategic Overview
- Status
- Patched in 2.13.10
- Affected Plugin
- Bit Form – Contact Form, Payment Forms, Multi Step Forms, Calculator & Custom Form Builder
- Affected Version
2.0 – 2.13.9- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2024-7775
At a glance
CVE-2024-7775 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Bit Form WordPress plugin, affecting versions 2.0 – 2.13.9. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 2.13.10; sites on affected versions should update now. Disclosed August 2024, reported by TANG Cheuk Hei (siunam).
Vulnerability Overview
The Contact Form by Bit Form: Multi Step Form, Calculation Contact Form, Payment Contact Form & Custom Contact Form builder plugin for WordPress is vulnerable to arbitrary JavaScript file uploads due to missing input validation in the addCustomCode function in versions 2.0 to 2.13.9. This makes it possible for authenticated attackers, with Administrator-level access and above, to upload arbitrary JavaScript files to the affected site's server.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Bit Form 2.0 – 2.13.9 takes an account at Administrator level or above. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Bit Form the fix is 2.13.10: builds 2.0 – 2.13.9 are affected, anything from 2.13.10 onward is not.
Remediation
Update to version 2.13.10, or a newer patched version
How does WordSec protect against this?
An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Bit Form 2.13.10 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Bit Form – Contact Form, Payment Forms, Multi Step Forms, Calculator & Custom Form Builder
- 9.8CVE-2025-6679: Contact Form by Bit Form… Arbitrary File Upload
CVE-2025-6679 - 9.8CVE-2022-4774: Bit Form <= 1.8.1 Arbitrary File Upload to RCE
CVE-2022-4774 - 9.0CVE-2024-7777: Contact Form by Bit… Arbitrary File Read And Deletion
CVE-2024-7777 - 8.7CVE-2024-7782: Contact Form by Bit Form Authenticater
CVE-2024-7782 - 7.5CVE-2026-13693: Bit Form <= 3.0.0 Arbitrary File Read
CVE-2026-13693 - 7.2CVE-2025-30885: Bit Form – Contact Form Plugin <= 2.18.0 Open Redirect
CVE-2025-30885 - 7.2CVE-2024-47319: Bit Form – Contact Form Plugin Arbitrary File Upload
CVE-2024-47319 - 7.2CVE-2024-7702: Contact Form by Bit Form SQL Injection
CVE-2024-7702
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