fireplugins FireBox Popups Plugin up to 3.1.7 on WordPress Form Submission form_id information disclosure

Summaryinfo

A vulnerability was found in fireplugins FireBox Popups Plugin up to 3.1.7 on WordPress. It has been rated as problematic. The affected element is an unknown function of the component Form Submission Handler. This manipulation of the argument form_id causes information disclosure. The identification of this vulnerability is CVE-2026-12120. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic was found in fireplugins FireBox Popups Plugin up to 3.1.7 on WordPress. Affected by this vulnerability is an unknown function of the component Form Submission Handler. The manipulation of the argument form_id with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

The FireBox Popups – Increase Sales and Grow Your Email List plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.1.7 via the 'form_id' parameter. This makes it possible for unauthenticated attackers to extract download a full CSV export of all form submissions — including any personally identifiable information submitted by users — for any arbitrary form_id.

The weakness was shared by Duc Manh. The advisory is shared at wordfence.com. This vulnerability is known as CVE-2026-12120 since 06/12/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/18/2026). MITRE ATT&CK project uses the attack technique T1592 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-37839). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• fireplugins

Name

• FireBox Popups Plugin

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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