CVE-2026-75526
django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django.
Impact
django CMS is an easy-to-use and developer-friendly enterprise content management system powered by Django. From 5.0.8 until 5.0.9, ContentRenderer.render_placeholder in cms/plugin_rendering.py can pass stored, attacker-controlled values to ContentRenderer.render_exception when plugin rendering fails in edit mode. Values from get_short_description(), the exception message, the placeholder, or placeholder.source are interpolated into a cms-rendering-exception heading and later returned through mark_safe. Because the heading is not escaped, stored HTML executes in an editor’s browser, and settings.DEBUG does not prevent the custom heading from rendering. The fix uses format_html to escape the message before safe placeholder output is returned. This issue is fixed in versions 5.0.9.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | django-cms | >= 5.0.8, < 5.0.9 | 5.0.9 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-hvq6-2r72-p2x7
- https://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7
- https://github.com/django-cms/django-cms/pull/8711
- https://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88
- https://github.com/django-cms/django-cms/releases/tag/5.0.9