mariovalney CF7 to Webhook Plugin up to 5.0.0 on WordPress Placeholder server-side request forgery

Summaryinfo

A vulnerability identified as critical has been detected in mariovalney CF7 to Webhook Plugin up to 5.0.0 on WordPress. Affected by this vulnerability is an unknown functionality of the component Placeholder Handler. The manipulation leads to server-side request forgery. This vulnerability is referenced as CVE-2026-11395. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in mariovalney CF7 to Webhook Plugin up to 5.0.0 on WordPress. It has been rated as critical. This issue affects some unknown functionality of the component Placeholder Handler. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The CF7 to Webhook plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.0.0 via the pull_the_trigger. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services. Exploitation requires that the admin-configured webhook URL contains a Contact Form 7 field placeholder in the host segment of the URL, and that the affected form is publicly accessible.

The weakness was published by Chris Peterson. The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-11395 since 06/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/18/2026).

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-2026-37863). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• mariovalney

Name

• CF7 to Webhook Plugin

Version

• 5.0

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.

Discussion