Understanding the Drupal Mini site Stored XSS Vulnerability (CVE-2025-13979)
In the world of web applications, security is paramount. A recently identified vulnerability, CVE-2025-13979, impacts the Mini site module for Drupal. This issue, categorized as a ‘Privilege Defined With Unsafe Actions’ leading to ‘Stored Cross-Site Scripting (XSS)’, poses a moderate risk to affected Drupal installations.
Simply put, Stored XSS is a type of security flaw where a malicious script is injected into a website’s database. When a legitimate user visits a page that retrieves this stored malicious data, their browser executes the script without their knowledge. This can lead to various problems, from stealing user session cookies to defacing the website or redirecting users to malicious sites. The “Privilege Defined With Unsafe Actions” aspect suggests that certain user roles within the Mini site module might have been granted permissions that allowed them to perform actions that could lead to this script injection, effectively escalating their ability to cause harm.
For administrators and developers managing Drupal websites that utilize the Mini site module, understanding and addressing this vulnerability promptly is crucial to maintain the integrity and security of their platforms and protect their users.
CVE Details
The CVE-2025-13979 vulnerability pertains to the Drupal Mini site module. It was publicly disclosed on January 28, 2026. The vulnerability has been assigned a Medium severity rating, reflecting its potential impact, and its status is currently classified as Analyzed.
Affected Products
This security flaw specifically affects installations running the Drupal Mini site module. Users are vulnerable if they are using any version of the Mini site module from its inception (0.0.0) up to, but not including, version 3.0.2.
Current Status
As of February 12, 2026, the vulnerability CVE-2025-13979 has been thoroughly Analyzed. This means cybersecurity experts have investigated the issue, understood its nature, and documented its characteristics. While analysis is complete, it is essential for users to apply any available patches or updates to mitigate the risk.
Severity Level
CVE-2025-13979 is rated with a Medium severity level, carrying a CVSS score of 5.4. A medium severity rating indicates that while the vulnerability may not allow complete system takeover or direct denial of service in all cases, it still presents a significant risk. In the case of Stored XSS, an attacker could potentially execute malicious scripts in a user’s browser, leading to session hijacking, data theft, or website defacement. The “Privilege Defined With Unsafe Actions” component amplifies this risk by implying that certain configurations or user roles might inadvertently enable this malicious script injection, allowing an attacker to leverage legitimate functionalities for harmful purposes.
Possible Solutions
To protect your Drupal website from the CVE-2025-13979 vulnerability, the most critical step is to update your Drupal Mini site module to a secure version. Specifically, it is advised to upgrade to version 3.0.2 or later. This updated version addresses the underlying issues that permitted the Stored XSS and privilege-related vulnerabilities.
Always ensure your Drupal core and all contributed modules are kept up-to-date with the latest security releases. Regularly review user permissions within your Drupal installation, especially for modules that handle content submission or display, to ensure that no ‘Privilege Defined With Unsafe Actions’ can be exploited. While further detailed patching instructions were not retrievable directly from the reference URL due to access restrictions at the time of writing, it is highly recommended to consult the official Drupal security advisory linked below for the most precise and up-to-date guidance on applying the necessary fixes.
References
https://www.drupal.org/sa-contrib-2025-117
