---
id: "CVE-2026-115301"
kind: "vulnerability"
aliases: ["CVE-2026-115301"]
title: "WordPress Contact Form plugin: stored template injection runs server code"
severity: "critical"
cvss: null
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["contact-form-by-supsystic", "package", "self-hosted", "wordpress", "wordpress-plugin"]
not_affected_if: ["plugin-not-installed", "version-1.11.1-or-later"]
published_at: "2026-10-29T06:17:20+00:00"
first_seen_at: "2026-10-29T06:53:13+00:00"
updated_at: "2026-10-29T06:54:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115301", "first_seen_at": "2026-10-29T06:53:13+00:00"}]
---

# WordPress Contact Form plugin: stored template injection runs server code

The Contact Form by Supsystic WordPress plugin before 1.11.1 renders stored form-editor content through a template engine without sandboxing it. An administrator can inject template code that runs on the server, and the payload executes for any visitor who loads a page with the form, exposing secrets such as salts and database credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of the Contact Form by Supsystic plugin in the WordPress admin plugins list; versions below `1.11.1` are in the stated range.
- Review stored form templates for unexpected template syntax if the plugin has been in use on this site.

## Fix

- Contact Form by Supsystic: `1.11.1` or later (the sources state the fix is in 1.11.1).

## Timeline

- 2026-10-29T06:53:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-115301

## From the sources

The Contact Form by Supsystic  WordPress plugin before 1.11.1 does not sandbox the template engine used to render its forms and allows stored form-editor content to reach that engine as executable template code, enabling an administrator to perform server-side template injection and execute arbitrary code on the server. The injected template is compiled and executed whenever any visitor loads a page containing the form, so the stored payload also lets an unauthenticated visitor read server-side secrets such as authentication salts and database credentials.

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