CVE-2026-108264 Code injection in wizarr
Authenticated users can execute arbitrary Python code via Server-Side Template Injection in Wizarr wizard steps, leading to remote code execution and credential disclosure.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-108264?
CVE-2026-108264 is a critical code injection vulnerability in wizarrrr wizarr, published on 9 Oct 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Wizarr is an advanced user invitation and management system for Jellyfin, Plex, Emby, and other media servers. Prior to 2026.9.1, wizard step Markdown supplied through the editor or imported bundles was evaluated by app/blueprints/wizard/routes.py in the application's non-sandboxed Jinja2 environment with application globals exposed. An authenticated user able to create steps, or an administrator importing an untrusted bundle through POST /settings/wizard/import, could execute arbitrary Python when GET /wizard/{server}/{idx} rendered the stored step; app/jinja_filters.py and app/services/wizard_widgets.py contained additional evaluation sinks. This could execute operating-system commands as the application user, disclose the Flask SECRET_KEY, access connected service credentials and the database, and produce stored cross-site scripting. This issue is fixed in 2026.9.1.
Weakness: CWE-1336
Which versions are affected by CVE-2026-108264?
How do I fix CVE-2026-108264?
No fix has been published for CVE-2026-108264 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-108264 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108264 exists.
Sources
Also known as GHSA-h9rv-mxh2-35f3.