django CMS: Plugin move endpoint allows cyclic reparenting (DoS)

SummaryThe moveplugin admin endpoint does not prevent a plugin from being reparented under itself or one of its own descendants. Doing so creates a cycle in the plugin tree, after which the recursive descendant/ancestor SQL queries loop without terminating, stalling the request worker...

django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

SummaryThe CMS page cache key ignores the request headers that plugins declare via getvarycacheon. The header is added to the response Vary header, but the CMS's own cache key does not incorporate the header values, so the first visitor's variant is served to all subsequent visitors regardless of...

PYSEC-2026-3822 django CMS: Plugin move endpoint allows cyclic reparenting (DoS)

Summary The moveplugin admin endpoint does not prevent a plugin from being reparented under itself or one of its own descendants. Doing so creates a cycle in the plugin tree, after which the recursive descendant/ancestor SQL queries loop without terminating, stalling the request worker. Details...

PYSEC-2026-3824 django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

Summary The CMS page cache key ignores the request headers that plugins declare via getvarycacheon. The header is added to the response Vary header, but the CMS's own cache key does not incorporate the header values, so the first visitor's variant is served to all subsequent visitors regardless o...

django CMS: Structure endpoint bypasses page-view permission

SummaryThe structure-board endpoint renderobjectstructure 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 renderpage, but the structure endpoint does not, allowing a low-privileged staff user...

django CMS: Broken access control in page *Duplicate* allows reading the content of any page (cross-site / restriction bypass)

ImpactThe only authorization gate on the duplicate flow is PageAdmin.hasaddpermission,which checks usercanaddpageuser, site / usercanaddsubpage... — i.e. “maythis user create a page at all”. Nothing checks the user’s relationship to the page beingcopied:- cms/admin/forms.py —...

PYSEC-2026-3821 django CMS: Broken access control in page *Duplicate* allows reading the content of any page (cross-site / restriction bypass)

Impact The only authorization gate on the duplicate flow is PageAdmin.hasaddpermission, which checks usercanaddpageuser, site / usercanaddsubpage... — i.e. “may this user create a page at all”. Nothing checks the user’s relationship to the page being copied: - cms/admin/forms.py —...

PYSEC-2026-3826 django CMS: Structure endpoint bypasses page-view permission

Summary The structure-board endpoint renderobjectstructure 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 renderpage, but the structure endpoint does not, allowing a low-privileged staff use...

PYSEC-2026-3820 django CMS: Clipboard copy IDOR discloses unauthorized plugin content

Summary The clipboard copy paths of the copyplugins admin endpoint validate only the target the user's own clipboard and skip source-side authorization. A staff user can copy plugins out of a placeholder they have no permission on into their clipboard, then read the secret content. Details In...

django CMS: Missing authorization in `render_object_structure` discloses non-PageContent placeholder structure to low-privileged staff

SummaryThe django-cms frontend-editing structure endpointGET //admin/cms/placeholder/object//structure//did not perform an object-level authorization check for non-PageContent objects. Any authenticated, active staff user could request the structure endpoint for a frontend-editable object a model...

PYSEC-2026-3823 django CMS: Missing authorization in `render_object_structure` discloses non-PageContent placeholder structure to low-privileged staff

Summary The django-cms frontend-editing structure endpoint GET //admin/cms/placeholder/object//structure// did not perform an object-level authorization check for non-PageContent objects. Any authenticated, active staff user could request the structure endpoint for a frontend-editable object a...

django CMS: Stored XSS in edit-mode plugin exception rendering

SummaryWhen plugin rendering fails in edit mode, django CMS renders a cms-rendering-exception block so editors can see that a placeholder could not be rendered. Older code built that block's heading by interpolating the exception message, placeholder/source strings, and the failing plugin's short...

django CMS: Clipboard copy IDOR discloses unauthorized plugin content

Summary The clipboard copy paths of the copyplugins admin endpoint validate only the target the user's own clipboard and skip source-side authorization. A staff user can copy plugins out of a placeholder they have no permission on into their clipboard, then read the secret content. Details In...

PYSEC-2026-3825 django CMS: Stored XSS in edit-mode plugin exception rendering

Summary When plugin rendering fails in edit mode, django CMS renders a cms-rendering-exception block so editors can see that a placeholder could not be rendered. Older code built that block's heading by interpolating the exception message, placeholder/source strings, and the failing plugin's shor...

CVE-2026-55468

Wagtail is an open source content management system built on Django. Prior to versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2 on their respective release lines, the internal Pages admin API returns page fields declared in apifields without sufficient access control, allowing a user with Wagtail admin...

EUVD-2026-63564

django CMS: Page cache ignores plugin-declared Vary headers disclosure & poisoning...

GHSA-FWJF-M4QW-9F2X django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

Summary The CMS page cache key ignores the request headers that plugins declare via getvarycacheon. The header is added to the response Vary header, but the CMS's own cache key does not incorporate the header values, so the first visitor's variant is served to all subsequent visitors regardless o...

django CMS: Page cache ignores plugin-declared Vary headers (disclosure & poisoning)

Summary The CMS page cache key ignores the request headers that plugins declare via getvarycacheon. The header is added to the response Vary header, but the CMS's own cache key does not incorporate the header values, so the first visitor's variant is served to all subsequent visitors regardless o...

Use of Cache Containing Sensitive Information

Overview Affected versions of this package are vulnerable to Use of Cache Containing Sensitive Information via the getvarycacheon process. An attacker can cause sensitive information to be disclosed to other users and manipulate cached content by priming the cache with attacker-controlled header...

GHSA-8JJ7-4V57-FRF5 django CMS: Plugin move endpoint allows cyclic reparenting (DoS)

Summary The moveplugin admin endpoint does not prevent a plugin from being reparented under itself or one of its own descendants. Doing so creates a cycle in the plugin tree, after which the recursive descendant/ancestor SQL queries loop without terminating, stalling the request worker. Details...