CVE-2025-61668 in volto
Summary
by MITRE • 10/03/2025
Volto is a ReactJS-based frontend for the Plone Content Management System. Versions 16.34.0 and below, 17.0.0 through 17.22.1, 18.0.0 through 18.27.1, and 19.0.0-alpha.1 through 19.0.0-alpha.5, an anonymous user could cause the NodeJS server part of Volto to quit with an error when visiting a specific URL. This issue is fixed in versions 16.34.1, 17.22.2, 18.27.2 and 19.0.0-alpha.6.
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Analysis
by VulDB Data Team • 10/03/2025
CVE-2025-61668 represents a critical denial of service vulnerability affecting Volto, a ReactJS-based frontend for the Plone Content Management System. This vulnerability stems from insufficient input validation within the NodeJS server component that processes HTTP requests. When an anonymous user accesses a specifically crafted URL, the server experiences a fatal error that causes it to terminate unexpectedly. The flaw manifests due to improper handling of malformed or unexpected URL parameters that reach the server-side processing layer without adequate sanitization or validation mechanisms. This issue affects multiple version ranges including Volto 16.34.0 and below, 17.0.0 through 17.22.1, 18.0.0 through 18.27.1, and 19.0.0-alpha.1 through 19.0.0-alpha.5, indicating a widespread impact across the Volto ecosystem. The vulnerability operates at the application layer and can be classified as a crash exploit under the Common Weakness Enumeration framework, specifically aligning with CWE-400 which covers unchecked resource consumption. From an operational perspective, this vulnerability presents a significant risk as it allows any unauthenticated user to disrupt service availability, potentially causing system downtime and impacting legitimate users who rely on the CMS functionality. The attack vector is particularly concerning because it requires no authentication credentials, making it easily exploitable by malicious actors or automated scanners. The root cause of the issue lies in the server's failure to properly validate incoming URL parameters before processing them through the backend NodeJS components, creating an execution path where malformed input directly leads to process termination. Organizations utilizing affected Volto versions face immediate operational risks including service disruption, potential data loss, and reputational damage. The vulnerability's impact is amplified by its ability to cause complete server process failure rather than merely slowing performance, which aligns with ATT&CK technique T1499.004 for network denial of service. The fix implemented in versions 16.34.1, 17.22.2, 18.27.2, and 19.0.0-alpha.6 involves enhanced input validation and proper error handling mechanisms that prevent malformed URL parameters from causing server crashes. Security practitioners should prioritize immediate patching of affected systems, implement network monitoring to detect exploitation attempts, and consider deploying web application firewalls to filter suspicious URL patterns. The vulnerability demonstrates the importance of robust input validation in web applications and highlights the need for comprehensive testing of URL handling mechanisms to prevent similar issues in other components of the Plone ecosystem. Organizations should also conduct thorough vulnerability assessments of their Volto implementations to identify any additional related weaknesses that could be exploited in conjunction with this vulnerability.