---
cve: "CVE-2026-75526"
severity: "MEDIUM"
cvss: 4.4
epss: "0.2%"
vendor: "django-cms"
kev: false
exploited: false
published: "2026-08-20 19:17:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T09:26:47+02:00"
---

# CVE-2026-75526

> 4.4 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- b56a568844ff3702495945f73a31d0868285bf88 (Commit)
- d7eeb6526bd757cfcdf28122066f39803990c5e4 (Commit)

## Referenzen

- <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>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-75526) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_