CVE-2026-115195

An Open Redirect vulnerability exists in the public form submission endpoint (/form/submit) of Mautic. After a form is submitted, the application redirects the visitor to a return address supplied with the submission without verifying that it points to the Mautic instance or another trusted host. An unauthenticated attacker can exploit this to send visitors from a legitimate Mautic domain to an arbitrary external website, for example to phishing pages that imitate the original landing page or to sites that deliver malware. Any Mautic instance with a published form is affected. Exploitation requires the victim to submit a form prepared by the attacker.

A path traversal vulnerability exists in the Mautic Asset API. When creating a local asset through the API, the supplied file path is not restricted to the asset upload directory. An authenticated API user with permission to create assets can register any file that is readable by the web server process as a Mautic asset. When the asset is published, its public download URL serves the contents of that file without authentication. This allows the attacker to read arbitrary files from the server, including Mautic configuration files containing the database password, secret key, and mail (SMTP) credentials, as well as system files and any other file readable by the web server user. Exposed credentials can be used to access the database or other connected services, and anyone with the public asset URL can retrieve the file contents.

A stored Cross-Site Scripting (XSS) vulnerability exists in the contact detail view of Mautic 7. Values of HTML-type custom contact fields are rendered without output sanitization, so a user or integration able to write such a value can store a script payload that executes in another user's browser session, including an administrator's, when the contact detail page is opened.

An SQL Injection vulnerability exists in the dashboard widget data API endpoint (/api/data/{type}). Chart filter parameters supplied by the client are not properly validated before use in database queries; an authenticated API user can use blind SQL injection to read arbitrary data from the Mautic database, including contact data and user account data with password hashes.

A SQL injection vulnerability exists in a contact lookup AJAX endpoint of the Mautic administration interface (/s/ajax). A request parameter that selects the contact field to search by is not properly validated before use in a database query; any authenticated Mautic user can exploit it regardless of role or permissions to read any data the Mautic database user can access, including user accounts with email addresses and password hashes, contact data, and campaign and email content.

An insecure deserialization (PHP object injection) vulnerability exists in Mautic's handling of segment filters and custom field properties. Several code paths deserialize stored values without restricting which PHP classes may be instantiated instead of using Mautic's safe deserialization helper; an attacker able to store a crafted serialized value can cause arbitrary PHP objects to be instantiated, and combined with gadget chains in Mautic's dependencies could execute arbitrary code on the server and read, modify, or delete data.

A server-side template injection vulnerability exists in the Twig theme rendering sandbox of Mautic. The sandbox introduced to restrict user-uploaded theme templates (the fix for GHSA-9fx4-7cmj-47vg) does not fully enforce its restrictions, allowing a crafted theme template to escape the sandbox; an authenticated user with core:themes:create permission can upload a malicious theme whose template is later rendered, resulting in arbitrary code execution with the privileges of the web server process.

Mautic version 2.6.1 and earlier fails to set flags on session cookies, which may lead to unauthorized access to user sessions.

Multiple cross-site request forgery (CSRF) vulnerabilities in Mautic 1.4.1 allow remote attackers to hijack the authentication of users for requests that can (1) delete email campaigns or (2) delete contacts.

An unrestricted file upload vulnerability exists in the campaign import feature of Mautic 7. When processing an uploaded campaign archive, the application copies the bundled asset files into a publicly accessible media directory without restricting their file names or types. An authenticated user with permission to create campaign imports can place arbitrary files, including server-side scripts, in the web root, leading to remote code execution on servers such as the default Apache setup of the official Mautic Docker image.