Overview
CVE-2025-12761 details a Cross-Site Scripting (XSS) vulnerability discovered in the Drupal Simple Multi Step Form module. This vulnerability allows attackers to inject malicious scripts into web pages generated by the module, potentially compromising user data and system integrity. It affects versions of the module prior to 2.0.0.
Technical Details
The vulnerability stems from improper neutralization of input during web page generation. Specifically, user-supplied data is not adequately sanitized before being displayed, allowing an attacker to inject arbitrary HTML or JavaScript code. The exact vector within the module is in how form input is handled and rendered back to the user, creating an opportunity for malicious code to be executed in the user’s browser within the context of the Drupal site.
This type of XSS is generally classified as stored XSS, meaning the malicious script is stored on the server (in the Drupal database via form submission) and then executed whenever a user views the page containing the vulnerable form data. This presents a higher risk than reflected XSS, where the malicious script is only executed once.
CVSS Analysis
According to the information provided, the CVSS score for CVE-2025-12761 is currently N/A. This likely indicates that the score is still being determined or that the reporting agency hasn’t yet assigned one. However, given the nature of XSS vulnerabilities, it’s highly likely to be classified as Medium or High severity, depending on the scope of impact and attack complexity. Pay close attention to updates on the Drupal security advisory for the official score when it becomes available.
Possible Impact
A successful XSS attack exploiting CVE-2025-12761 could have several severe consequences:
- Data Theft: Attackers could steal user cookies, session tokens, and other sensitive information.
- Account Takeover: By stealing session cookies, attackers could impersonate legitimate users and gain unauthorized access to accounts.
- Malware Distribution: The injected scripts could redirect users to malicious websites or download malware onto their devices.
- Defacement: Attackers could alter the appearance of the website, causing reputational damage.
- Phishing: The injected scripts could be used to display fake login forms to steal user credentials.
Mitigation or Patch Steps
The primary mitigation for CVE-2025-12761 is to update the Simple Multi Step Form module to version 2.0.0 or later. This version contains a patch that addresses the XSS vulnerability by properly sanitizing user input. Follow these steps:
- Backup your Drupal site: Before making any changes, create a full backup of your Drupal site, including the database and files.
- Update the module: Using the Drupal administration interface, navigate to the modules page and update the Simple Multi Step Form module to the latest version (2.0.0 or higher). Alternatively, you can use Drush:
drush updatestatusand thendrush update simple_multi_step_form - Clear Drupal Cache: After updating the module, clear the Drupal cache to ensure the changes take effect. You can do this via the admin UI or using drush:
drush cr - Test: After the update, thoroughly test the affected forms to ensure that the vulnerability has been resolved and that the module is functioning correctly. Try entering potentially malicious data into the forms to see if it’s properly sanitized.
