{"cve":"CVE-2026-75526","nvd":{"published":"2026-08-20T19:17:03.787","modified":"2026-10-26T10:10:00.140","status":"Awaiting Analysis","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N","score":4.4},"cwes":["CWE-79"],"references":["https://github.com/django-cms/django-cms/commit/b56a568844ff3702495945f73a31d0868285bf88","https://github.com/django-cms/django-cms/pull/8711","https://github.com/django-cms/django-cms/releases/tag/5.0.9","https://github.com/django-cms/django-cms/security/advisories/GHSA-hvq6-2r72-p2x7"],"products":[],"source":"nvd","synced_at":"2026-10-26T10:28:23.151169805+00:00"},"epss":{"cve":"CVE-2026-75526","score":0.00261,"percentile":0.17698,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-hvq6-2r72-p2x7","url":"https://osv.dev/vulnerability/GHSA-hvq6-2r72-p2x7","summary":"django CMS: Stored XSS in edit-mode plugin exception rendering","modified":"2026-09-10T12:26:01.118431606Z","packages":[{"ecosystem":"PyPI","name":"django-cms","purl":"pkg:pypi/django-cms","ranges":[">=5.0.8 <5.0.9"],"fixed":["5.0.9"]}]},{"id":"PYSEC-2026-3825","url":"https://osv.dev/vulnerability/PYSEC-2026-3825","summary":"django CMS: Stored XSS in edit-mode plugin exception rendering","modified":"2026-09-10T12:15:03.035763796Z","packages":[{"ecosystem":"PyPI","name":"django-cms","purl":"pkg:pypi/django-cms","ranges":[">=5.0.8 <5.0.9"],"fixed":["5.0.9"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}