Wizarrrr Wizarr up to 2026.9.0 Wizard routes.py cross site scripting

Summaryinfo

A vulnerability was found in Wizarrrr Wizarr up to 2026.9.0. It has been classified as problematic. The affected element is an unknown function of the file app/blueprints/wizard/routes.py of the component Wizard. The manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-108264. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Wizarrrr Wizarr up to 2026.9.0. It has been rated as problematic. This issue affects an unknown code block of the file app/blueprints/wizard/routes.py of the component Wizard. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-108264 since 10/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 2026.9.1 eliminates this vulnerability.

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Productinfo

Vendor

• Wizarrrr

Name

• Wizarr

Version

• 2026.0
• 2026.1
• 2026.2
• 2026.3
• 2026.4
• 2026.5
• 2026.6
• 2026.7
• 2026.8
• 2026.9.0

Website

• Product: https://github.com/wizarrrr/wizarr/

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