CVE-2026-63003 json
django CMS: Broken access control in page *Duplicate* allows reading the content of any page (cross-site / restriction bypass)
published 2026-08-20 2 mo ago modified 2026-10-26 13 d ago also GHSA-6x92-6vx4-5fwr , PYSEC-2026-3821 , EUVD-2026-63570
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 36%
- public exploits
- 0
- none known
Summary
django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. Prior to 5.0.9, page duplication lacks an object-level authorization check on the source page. In cms/admin/forms.py, DuplicatePageForm.source accepts any Page, the AddPageForm constructor does not narrow a hidden source field, AddPageForm.clean does not validate the source against the user, and AddPageForm.save calls from_source. In cms/admin/pageadmin.py, duplicate and PageAdmin.has_add_permission check only whether a staff user may add a page. A crafted source value can therefore copy every placeholder and plugin from an unauthorized page with permissions=False, stripping source view restrictions and exposing content across sites or restricted subtrees when CMS_PERMISSION is enabled. This issue is fixed in versions 5.0.9.
Patch / fix
- pypi django-cms 5.0.9
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| OSV | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | django-cms | <5.0.9 |
5.0.9 |
Affected products
- django-cms django-cms
Classification
References
-
github.com
/django-cms/django-cms/pull/8713
web
-
github.com
/django-cms/django-cms/commit/3e1ccf7573eb1a74ebbbfaaa812c1f5cadf14e6c
web
-
github.com
/django-cms/django-cms/security/advisories/GHSA-6x92-6vx4-5fwr
web
-
github.com
/django-cms/django-cms/releases/tag/5.0.9
web
-
github.com
/django-cms/django-cms
package
-
pypi.org
/project/django-cms
package
-
github.com
/advisories/GHSA-6x92-6vx4-5fwr
advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-63003
advisory
Sources
- CVE List CVE-2026-63003
- GitHub Advisory GHSA-6x92-6vx4-5fwr
- NVD CVE-2026-63003
- OSV PYSEC-2026-3821
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.