CVE-2026-54624 in Django CMS
Summary
by MITRE • 08/20/2026
django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. Prior to 5.0.8, render_object_structure in cms/views.py renders cms/toolbar/structure.html for a PageContent object without calling user_can_view_page(). Any staff account can request a restricted page’s structure when CMS_PERMISSION is enabled and the page has view restrictions or CMS_PUBLIC_FOR is set to staff. The response exposes plugin get_short_description() values, including link names, URLs, and text snippets, rather than only the page shape. This issue is fixed in versions 5.0.8.
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Analysis
by VulDB Data Team • 08/20/2026
The vulnerability identified in django CMS prior to version 5.0.8 represents a significant access control failure within the administrative interface's structural rendering logic. Specifically, the flaw resides in the render_object_structure function located in the cms/views.py module. This function is responsible for generating the HTML structure of a page content object by rendering the template cms/toolbar/structure.html. The critical technical deficiency lies in the absence of an authorization check before this rendering process occurs. In secure implementations, any request to access or manipulate administrative structures must be validated against the requesting user's permissions relative to the specific resource being accessed. However, in versions preceding 5.0.8, the system fails to invoke the user_can_view_page() method prior to processing the structure template for a PageContent object. This omission creates a direct path for unauthorized data exposure without requiring any complex exploitation techniques or privilege escalation steps beyond having valid staff credentials.
The operational impact of this vulnerability is particularly severe in environments where CMS_PERMISSION is enabled and pages are configured with view restrictions or when CMS_PUBLIC_FOR is set to restrict public access to staff only. Under these configurations, the application logic intends to limit visibility of certain page structures to authorized personnel based on specific criteria such as user groups, roles, or individual permissions. Because the render_object_structure endpoint does not enforce these checks, any authenticated staff account can request and receive the structural data for restricted pages. This bypasses the intended security boundaries established by the content management system's permission model, allowing users who should have no visibility into specific sections of the website to access their underlying architecture.
The nature of the information disclosed extends beyond mere metadata about page layout or hierarchy. The response exposes plugin get_short_description() values associated with the restricted pages. These descriptions often contain sensitive operational details including internal link names, direct URLs to resources, and text snippets that may reveal business logic, confidential project statuses, or proprietary content strategies. For an attacker possessing staff credentials but lacking explicit view permissions for a specific page, this constitutes a clear case of information disclosure through broken access control mechanisms. The exposure of plugin-specific data can facilitate further reconnaissance efforts, as it provides insights into the third-party extensions and custom plugins deployed within the CMS environment, potentially aiding in the identification of other known vulnerabilities associated with those specific software components.
From a classification perspective, this vulnerability aligns directly with CWE-284, which describes Improper Access Control, specifically reflecting failures where access control decisions are not enforced before performing sensitive operations. It also maps to MITRE ATT&CK technique T1078, Valid Accounts, as the exploitation relies on legitimate authentication credentials being misused due to insufficient authorization checks at the application logic layer rather than a flaw in the authentication mechanism itself. The attack vector is classified as local or remote depending on network exposure of the admin interface, but it requires no special conditions beyond valid staff login status and knowledge of the target page's structure endpoint.
Mitigation for this vulnerability involves upgrading django CMS to version 5.0.8 or later, where the render_object_structure function has been patched to include proper authorization checks via user_can_view_page(). For organizations unable to immediately upgrade due to dependency constraints, temporary mitigations should focus on restricting access to the administrative interface through network-level controls such as IP whitelisting within a firewall or reverse proxy configuration. Additionally, implementing strict role-based access control policies and auditing staff account permissions can reduce the attack surface by ensuring that only essential personnel have admin privileges. Regular security assessments of custom plugins are also recommended since the exposure of plugin descriptions may reveal additional vectors for exploitation if those plugins contain their own vulnerabilities.