Threats affecting pkg:github/domoticz/domoticz

CVE-2026-75520 is a path traversal vulnerability in Domoticz prior to version 2026.3. It allows a low-privilege authenticated user to execute existing operator-installed Lua parser scripts via the udevices JSON command handler without proper session rights checks. The vulnerability arises because the script parameter lacks path traversal protections, enabling access to Lua scripts through the GET /json.htm endpoint. Execution is limited to already-installed Lua files, and arbitrary code execution is not possible. The issue is fixed in Domoticz version 2026.3.

Domoticz versions prior to 2026.3 contain a stored cross-site scripting (XSS) vulnerability in the mobile dashboard. Authenticated attackers can inject arbitrary HTML and JavaScript by updating Text or Alert subtype device values via the API. The mobile dashboard renders this data using ng-bind-html with only an nl2br() transform, which does not escape HTML, allowing malicious scripts to execute in administrator browsers. This can lead to session cookie theft and account takeover.