CVE-2025-31688 in Configuration Split
Summary
by MITRE • 04/01/2025
Cross-Site Request Forgery (CSRF) vulnerability in Drupal Configuration Split allows Cross Site Request Forgery.This issue affects Configuration Split: from 0.0.0 before 1.10.0, from 2.0.0 before 2.0.2.
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Analysis
by VulDB Data Team • 08/28/2025
The CVE-2025-31688 vulnerability represents a critical Cross-Site Request Forgery flaw within the Drupal Configuration Split module, a component widely utilized for managing configuration states across different environments. This vulnerability specifically impacts versions prior to 1.10.0 in the 0.x branch and before 2.0.2 in the 2.x branch, creating a significant security risk for Drupal installations that rely on this module for configuration management. The issue stems from the module's insufficient validation of cross-site requests, allowing malicious actors to exploit the lack of proper anti-CSRF measures in the configuration splitting functionality. The vulnerability enables unauthorized actions to be performed on behalf of authenticated users, potentially leading to configuration changes that could compromise system integrity and security posture.
The technical implementation of this CSRF vulnerability occurs within the module's form handling and request processing mechanisms. When users interact with the configuration splitting interface, the module fails to properly validate the origin and authenticity of requests, particularly those involving configuration modifications. This weakness aligns with CWE-352, which specifically addresses Cross-Site Request Forgery vulnerabilities, and demonstrates how the absence of proper request validation can lead to unauthorized operations. The flaw typically manifests when an attacker crafts a malicious request that appears to originate from a legitimate user session, exploiting the trust relationship between the web application and the user's browser. The vulnerability is particularly concerning because it operates at the configuration management layer, where unauthorized changes can have far-reaching consequences for system behavior and security controls.
The operational impact of this vulnerability extends beyond simple data manipulation, as configuration splitting is fundamental to how Drupal sites manage their deployment processes and environment-specific settings. Attackers exploiting this CSRF vulnerability could potentially alter critical configuration parameters, modify user permissions, change site settings, or even introduce malicious configurations that persist across different environments. This risk is compounded by the fact that configuration splitting is commonly used in production environments where security controls are paramount. The vulnerability could be leveraged to establish persistent backdoors, disable security modules, or modify access controls, making it particularly dangerous for organizations relying on Drupal for mission-critical applications. The attack surface is further expanded when considering that many Drupal installations use this module for automated deployment processes, where unauthorized configuration changes could disrupt services or compromise entire systems.
Mitigation strategies for CVE-2025-31688 should prioritize immediate version upgrades to the patched releases, specifically moving to version 1.10.0 or 2.0.2, depending on the module version in use. Organizations should implement comprehensive patch management procedures to ensure all instances of the vulnerable module are updated across their infrastructure. Additional defensive measures include implementing proper input validation, ensuring that all configuration modification requests include proper CSRF tokens, and reviewing the module's configuration to minimize unnecessary permissions. The vulnerability's classification under the ATT&CK framework would align with techniques involving privilege escalation and persistence, as unauthorized configuration changes could enable attackers to maintain access and control over affected systems. Security teams should also conduct thorough audits of their configuration management processes and implement monitoring for unauthorized configuration changes that could indicate exploitation attempts. Regular security assessments of Drupal installations, including vulnerability scanning and penetration testing, are essential to identify and remediate similar weaknesses in the broader application ecosystem.