PYSEC-2026-3826
Vulnerability from pysec - Published: 2026-09-10 09:44 - Updated: 2026-09-10 11:02Summary
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]).
| Name | purl | django-cms | pkg:pypi/django-cms |
|---|
{
"affected": [
{
"package": {
"ecosystem": "PyPI",
"name": "django-cms",
"purl": "pkg:pypi/django-cms"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.0.8"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.1",
"2.0.2",
"2.1.1",
"2.1.2",
"2.1.3",
"2.1.4",
"2.1.5",
"2.2",
"2.2.1",
"2.3.1",
"2.3.2",
"2.3.3",
"2.3.4",
"2.3.5",
"2.3.6",
"2.3.7",
"2.3.8",
"2.4.0",
"2.4.1",
"2.4.2",
"2.4.3",
"3.0",
"3.0.1",
"3.0.10",
"3.0.11",
"3.0.12",
"3.0.13",
"3.0.14",
"3.0.15",
"3.0.16",
"3.0.17",
"3.0.18",
"3.0.2",
"3.0.3",
"3.0.4",
"3.0.5",
"3.0.6",
"3.0.7",
"3.0.8",
"3.0.9",
"3.1.0",
"3.1.0.b1",
"3.1.0rc1",
"3.1.0rc2",
"3.1.1",
"3.1.2",
"3.1.3",
"3.1.4",
"3.1.5",
"3.1.6",
"3.1.7",
"3.10.0",
"3.10.0rc1",
"3.10.0rc2",
"3.10.1",
"3.10.1rc1",
"3.11.0",
"3.11.1",
"3.11.10",
"3.11.11",
"3.11.1rc1",
"3.11.2",
"3.11.3",
"3.11.4",
"3.11.5",
"3.11.6",
"3.11.7",
"3.11.8",
"3.11.9",
"3.2.0",
"3.2.1",
"3.2.2",
"3.2.3",
"3.2.4",
"3.2.5",
"3.3.0",
"3.3.0rc2",
"3.3.0rc3",
"3.3.0rc4",
"3.3.1",
"3.3.2",
"3.3.3",
"3.3.4",
"3.4.0",
"3.4.1",
"3.4.2",
"3.4.3",
"3.4.4",
"3.4.5",
"3.4.6",
"3.4.7",
"3.5.0",
"3.5.1",
"3.5.2",
"3.5.3",
"3.5.4",
"3.6.0",
"3.6.0rc1",
"3.6.0rc3",
"3.6.1",
"3.7.0",
"3.7.0rc1",
"3.7.0rc2",
"3.7.1",
"3.7.2",
"3.7.3",
"3.7.4",
"3.8.0",
"3.8.0rc1",
"3.8.1",
"3.8.2",
"3.9.0",
"3.9.0rc1",
"3.9.0rc2",
"3.9.0rc3",
"4.1.0",
"4.1.0rc1",
"4.1.0rc2",
"4.1.0rc3",
"4.1.0rc4",
"4.1.0rc5",
"4.1.1",
"4.1.10",
"4.1.11",
"4.1.2",
"4.1.3",
"4.1.4",
"4.1.5",
"4.1.6",
"4.1.7",
"4.1.9",
"5.0.0",
"5.0.0a1",
"5.0.1",
"5.0.2",
"5.0.3",
"5.0.4",
"5.0.5",
"5.0.6",
"5.0.7"
]
}
],
"aliases": [
"CVE-2026-54624",
"GHSA-vgxm-h9gx-h9w7"
],
"details": "### Summary\nThe structure-board endpoint (`render_object_structure`) renders a page\u0027s 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` \u2192 `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\u0027s `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\u0027s plugin structure and short descriptions by requesting the structure endpoint with the page\u0027s content-type id and object id.\n\nThis only applies when `CMS_PERMISSION=True` and the page has view restrictions (or `CMS_PUBLIC_FOR=\u0027staff\u0027`). 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]).",
"id": "PYSEC-2026-3826",
"modified": "2026-09-10T11:02:03.786970Z",
"published": "2026-09-10T09:44:52.426487Z",
"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"
},
{
"type": "PACKAGE",
"url": "https://pypi.org/project/django-cms"
},
{
"type": "ADVISORY",
"url": "https://github.com/advisories/GHSA-vgxm-h9gx-h9w7"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54624"
}
],
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "django CMS: Structure endpoint bypasses page-view permission"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.