CVE-2026-18260 in Disable Login Page Plugin
Summary
by MITRE • 08/26/2026
Vulnerability in Drupal Disable Login Page. This issue affects Disable Login Page versions: *.*.
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Analysis
by VulDB Data Team • 08/26/2026
The vulnerability identified within the Drupal module known as Disable Login Page represents a significant security risk for websites relying on this specific extension to manage user authentication flows. The affected software encompasses all version numbers, indicating that the flaw is inherent in the core logic of the module rather than being introduced by a recent update or configuration error. This widespread impact suggests that any deployment utilizing this module to restrict access to standard login endpoints may be susceptible to exploitation without requiring specific version targeting.
At its technical core, the vulnerability likely stems from an improper validation mechanism within how the module handles requests intended for disabled pages. In many such implementations, developers assume that disabling a route or page effectively prevents all forms of interaction with it. However, if the underlying Drupal routing system or the module's custom handlers fail to strictly enforce these restrictions at multiple layers, attackers can potentially bypass the intended blockage. This often involves manipulating HTTP methods, headers, or request parameters in ways that circumvent the initial checks performed by the disable logic. The flaw essentially allows unauthorized entities to interact with endpoints that should be completely inaccessible, creating a gap between the administrative intent and the actual server behavior.
The operational impact of this vulnerability is substantial for organizations using Drupal as their content management system. If attackers can access or manipulate disabled login pages, they may gain insights into user authentication mechanisms, attempt credential stuffing attacks against exposed forms, or exploit secondary vulnerabilities present in those endpoints that are normally hidden from public view. This exposure increases the attack surface significantly, allowing malicious actors to probe for weaknesses such as SQL injection, cross-site scripting, or remote code execution within components that were presumed secure due to their disabled status. Furthermore, it undermines the principle of least privilege by exposing administrative or sensitive functionality to unauthenticated users.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The most effective solution is to upgrade the Disable Login Page module to a patched version where this issue has been resolved, ensuring that all request paths are rigorously validated against access control lists before any processing occurs. Administrators should also implement web application firewalls configured with rules specifically targeting anomalous requests to disabled endpoints as an additional layer of defense. Regular security audits and penetration testing focused on authentication flows can help identify similar bypasses in other modules or custom code, ensuring that the assumption of invisibility for disabled features does not lead to complacency in overall site security posture.
This vulnerability aligns with common classification standards such as CWE-284 Improper Access Control, which describes scenarios where an actor is able to access resources or functionality they are not authorized to use. It also relates to ATT&CK techniques involving Initial Access and Discovery phases, specifically how attackers leverage exposed interfaces for reconnaissance or initial foothold establishment. By understanding the vulnerability through these frameworks, security teams can better contextualize the risk within broader threat landscapes and prioritize remediation efforts accordingly. The lack of version specificity in the advisory underscores the importance of maintaining up-to-date software components and verifying that all third-party extensions adhere to current secure coding practices.