CVE-2026-54624: django CMS Structure Endpoint Bypasses Page-view Permission Vulnerability

MODERATE
Advisory Identifier: GHSA-vgxm-h9gx-h9w7
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CVSS 6.5
CWE-862 CWE-285
Published
Advisory Summary

CVE-2026-54624 is a MODERATE (CVSS 6.5) structure endpoint bypasses page-view permission vulnerability (CWE-862: Missing Authorization) affecting django CMS libraries in the PyPI ecosystem. The issue involves structure endpoint bypasses page-view permission. Remediation is available by upgrading affected packages to version 5.0.8.

CVE-2026-54624 at a Glance

CVE Identifier CVE-2026-54624
GHSA Identifier GHSA-vgxm-h9gx-h9w7
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-862: Missing Authorization
Affected Product django CMS
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-54624

To remediate this vulnerability, upgrade all affected django CMS dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

django-cms fixed: 5.0.8 
pip install django-cms>=5.0.8
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show django-cms

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-54624, inspect your installed packages using pip:

pip show django-cms

Analyze the terminal output to locate any version of django CMS in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.8), your application is affected.

Note: The pip show django-cms command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In django CMS, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Summary The structure-board endpoint (`render_object_structure`) renders a page's plugin structure without verifying that the requesting user is allowed to view the page. The edit and preview endpoints enforce this via `render_page()`, but the structure endpoint does not, allowing a low-privileged staff user to read the plugin structure of a view-restricted page. ### Details `render_object_structure` (in `cms/views.py`) loads the `PageContent` object and renders `cms/toolbar/structure.html` directly. Unlike `render_object_endpoint` (used by edit/preview), which renders through `render_pagecontent` → `render_page` and calls `user_can_view_page(request.user, page)` (returning 404 when the user may not view the page), the structure endpoint performs no page-level authorization. The rendered structure board includes each plugin's `get_short_description()` (e.g. link names/URLs, text snippets), so the content of a restricted page is disclosed, not just its shape. ### Impact A staff user (any account with `is_staff=True`) who lacks view permission on a view-restricted page can retrieve that page's plugin structure and short descriptions by requesting the structure endpoint with the page's content-type id and object id. This only applies when `CMS_PERMISSION=True` and the page has view restrictions (or `CMS_PUBLIC_FOR='staff'`). Sites without per-page view restrictions are not affected. ### Patches Fixed in 5.0.8: the structure endpoint now enforces `user_can_view_page()` for `PageContent` objects, matching edit/preview. ### Workarounds None other than restricting staff access. Upgrade is recommended. ### Credits Reported by the security team at the University of Sydney ([@reporter]).

CVE-2026-54624 Affected django CMS Versions

1 component(s)
Fixed Versions:
5.0.8
Product / Package Ecosystem Affected Versions Fixed Version
django-cms
pypi/django-cms
PyPI
< 5.0.8
5.0.8

References

GitHub Advisory / Wiki ADVISORY
https://github.com/django-cms/django-cms/security/advisories/GHSA-vgxm-h9gx-h9w7
django CMS Source Repository REPOSITORY
https://github.com/django-cms/django-cms/pull/8645
Security Fix Commit FIX COMMIT
https://github.com/django-cms/django-cms/commit/7642a98ab3170793c0b27b4125dd1f3d318b8a1c
django CMS Source Repository REPOSITORY
https://github.com/django-cms/django-cms
django CMS Release RELEASE
https://github.com/django-cms/django-cms/releases/tag/5.0.8

Frequently Asked Questions

What is CVE-2026-54624?
CVE-2026-54624 is a security vulnerability in django CMS involving Structure endpoint bypasses page-view permission under CWE-862: Missing Authorization.
Which django CMS versions are affected?
Affected versions include releases prior to 5.0.8 across affected packages: django-cms.
What version fixes CVE-2026-54624?
Upgrading to 5.0.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is django-cms affected?
Yes, django-cms is affected in releases prior to 5.0.8. Upgrade your dependency to 5.0.8 or later.
What is the CVSS score of CVE-2026-54624?
CVE-2026-54624 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-54624?
CVE-2026-54624 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check PyPI dependencies for CVE-2026-54624?
Run the dependency tree command: 'pip show django-cms'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vgxm-h9gx-h9w7",
  "modified" : "2026-08-20T18:42:16Z",
  "published" : "2026-08-20T18:42:16Z",
  "aliases" : [ "CVE-2026-54624" ],
  "summary" : "django CMS: Structure endpoint bypasses page-view permission",
  "details" : "### Summary\nThe structure-board endpoint (`render_object_structure`) renders a page's plugin structure without verifying that the requesting user is allowed to view the page. The edit and preview endpoints enforce this via `render_page()`, but the structure endpoint does not, allowing a low-privileged staff user to read the plugin structure of a view-restricted page.\n\n### Details\n`render_object_structure` (in `cms/views.py`) loads the `PageContent` object and renders `cms/toolbar/structure.html` directly. Unlike `render_object_endpoint` (used by edit/preview), which renders through `render_pagecontent` → `render_page` and calls `user_can_view_page(request.user, page)` (returning 404 when the user may not view the page), the structure endpoint performs no page-level authorization.\n\nThe rendered structure board includes each plugin's `get_short_description()`  (e.g. link names/URLs, text snippets), so the content of a restricted page is disclosed, not just its shape.\n\n### Impact\nA staff user (any account with `is_staff=True`) who lacks view permission on a  view-restricted page can retrieve that page's plugin structure and short descriptions by requesting the structure endpoint with the page's content-type id and object id.\n\nThis only applies when `CMS_PERMISSION=True` and the page has view restrictions (or `CMS_PUBLIC_FOR='staff'`). Sites without per-page view restrictions are not affected.\n\n### Patches\nFixed in 5.0.8: the structure endpoint now enforces `user_can_view_page()` for `PageContent` objects, matching edit/preview.\n\n### Workarounds\nNone other than restricting staff access. Upgrade is recommended.\n\n### Credits\nReported by the security team at the University of Sydney ([@reporter]).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "django-cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.0.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/django-cms/django-cms/security/advisories/GHSA-vgxm-h9gx-h9w7"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django-cms/django-cms/pull/8645"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django-cms/django-cms/commit/7642a98ab3170793c0b27b4125dd1f3d318b8a1c"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/django-cms/django-cms"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/django-cms/django-cms/releases/tag/5.0.8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-285", "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-20T18:42:16Z",
    "nvd_published_at" : null
  }
}