CVE-2025-48383 in django-select2
Summary
by MITRE • 05/27/2025
Django-Select2 is a Django integration for Select2. Prior to version 8.4.1, instances of HeavySelect2Mixin subclasses like the ModelSelect2MultipleWidget and ModelSelect2Widget can leak secret access tokens across requests. This can allow users to access restricted query sets and restricted data. This issue has been patched in version 8.4.1.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 05/27/2025
The vulnerability identified as CVE-2025-48383 affects Django-Select2, a popular Django integration for the Select2 JavaScript library that enhances HTML select elements with search capabilities and other features. This particular flaw resides within the HeavySelect2Mixin subclasses, specifically impacting ModelSelect2MultipleWidget and ModelSelect2Widget components that handle database-driven select elements in Django applications. The issue represents a critical security concern as it enables unauthorized access to restricted data through the improper handling of sensitive authentication tokens during HTTP requests.
The technical flaw manifests in the improper management of secret access tokens within the HeavySelect2Mixin implementation, where authentication credentials or session tokens are inadvertently exposed across multiple HTTP requests. This occurs when the mixin processes user interactions with select elements that query database models, causing sensitive tokens to persist in request contexts where they should remain isolated. The vulnerability allows attackers to exploit the token leakage mechanism to access restricted query sets and sensitive data that should only be available to authorized users with appropriate permissions. This type of information disclosure vulnerability aligns with CWE-200, which specifically addresses improper exposure of sensitive information.
The operational impact of this vulnerability extends beyond simple data leakage, as it enables attackers to potentially escalate their privileges and access restricted functionality within Django applications. When users interact with affected select widgets, the leaked tokens can be harvested by malicious actors to make unauthorized API calls or database queries, effectively bypassing access controls that should protect sensitive data. This creates a significant risk for applications that rely on Django-Select2 for administrative interfaces, user management systems, or any component that requires restricted data access. The vulnerability can be exploited through various attack vectors including cross-site scripting scenarios, session hijacking, or direct manipulation of request parameters that trigger the token leakage behavior.
Mitigation strategies for CVE-2025-48383 require immediate deployment of Django-Select2 version 8.4.1, which contains the necessary patches to address the token leakage mechanism. Organizations should conduct comprehensive security assessments to identify all instances of the vulnerable components within their Django applications and ensure proper version updates are implemented across all environments. Additionally, security teams should implement monitoring solutions to detect unusual patterns in API requests or database access that might indicate exploitation attempts. The fix addresses the underlying architectural flaw by ensuring proper token isolation between requests and implementing secure handling of authentication contexts within the HeavySelect2Mixin classes. This vulnerability demonstrates the importance of secure session management and proper credential handling in web application frameworks, aligning with ATT&CK technique T1566 for credential access and T1071 for application layer protocol usage, where the leakage of authentication tokens creates opportunities for further compromise of affected systems.