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PatchSiren cyber security CVE debrief

CVE-2026-11395 mariovalney CVE debrief

The CF7 to Webhook plugin for WordPress has a critical vulnerability, CVE-2026-11395, with a CVSS score of 7.2. This Server-Side Request Forgery (SSRF) vulnerability allows unauthenticated attackers to make web requests to arbitrary locations, potentially querying and modifying internal services. The vulnerability exists in all versions up to and including 5.0.0 of the plugin. Exploitation requires a specific configuration: the admin-configured webhook URL must contain a Contact Form 7 field placeholder in the host segment, and the affected form must be publicly accessible. WordPress users and administrators should take immediate action to protect their sites.

Vendor
mariovalney
Product
CF7 to Webhook
CVSS
HIGH 7.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-18
Original CVE updated
2026-06-18
Advisory published
2026-06-18
Advisory updated
2026-06-18

Who should care

WordPress users and administrators who have installed the CF7 to Webhook plugin, especially those with publicly accessible forms, should be aware of this vulnerability and take immediate action to protect their sites. Security teams monitoring for potential SSRF attacks should also prioritize this CVE.

Technical summary

The CF7 to Webhook plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) due to inadequate validation of user input. Specifically, the 'pull_the_trigger' functionality allows unauthenticated attackers to make arbitrary web requests. The vulnerability is characterized by the following CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N. This means the vulnerability can be exploited remotely without authentication, and it has a moderate impact on confidentiality and integrity.

Defensive priority

High

Recommended defensive actions

  • Update the CF7 to Webhook plugin to a version beyond 5.0.0 immediately.
  • Review and restrict access to publicly accessible forms that use the CF7 to Webhook plugin.
  • Monitor webhook URLs for suspicious activity and ensure they do not contain Contact Form 7 field placeholders in the host segment.
  • Implement additional security measures to detect and prevent SSRF attacks.
  • Regularly review and update all WordPress plugins and themes.
  • Consider using a Web Application Firewall (WAF) to detect and block suspicious traffic.
  • Educate administrators and users about the risks associated with this vulnerability.

Evidence notes

The information provided is based on data from official sources, including the National Vulnerability Database (NVD) and Wordfence security research. The CVE record and NVD detail pages provide comprehensive information about the vulnerability. Additional references from Wordfence offer insights into the vulnerability's discovery and exploitation.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11395 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11395

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11395 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11395

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/cf7-to-zapier/tags/5.0.0/modules/cf7/class-module-cf7.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/cf7-to-zapier/tags/5.0.0/modules/cf7/class-module-cf7.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/cf7-to-zapier/tags/5.0.0/modules/zapier/class-module-zapier.php

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.