When this user is a privileged user who has programming rights, this allows server-side code execution with programming rights, impacting the confidentiality, integrity and availability of the XWiki instance. When a user moves the mouse over a malicious link, the malicious JavaScript code is executed in the context of the user session. This can be exploited, e.g., via the link syntax in any content that supports XWiki syntax like comments in XWiki. The cleaning of attributes during XHTML rendering, introduced in version 14.6-rc-1, allowed the injection of arbitrary HTML code and thus cross-site scripting via invalid attribute names. XWiki Rendering is a generic Rendering system that converts textual input in a given syntax into another syntax. There are no known workarounds for this vulnerability. This issue has been addressed in version 2023.9.0 and all users are advised to upgrade. This fault incurs major risk, considering the ability to trick users into installing an external and malicious add-on with minimal user interaction, which would enable Remote Code Execution (RCE) within the Home Assistant application. The omission of this and correlating headers facilitates covert clickjacking attacks and alternative exploit opportunities, such as the vector described in this security advisory. Home Assistant server does not set any HTTP security headers, including the X-Frame-Options header, which specifies whether the web page is allowed to be framed. Home assistant is an open source home automation. This Cross-site Scripting (XSS) vulnerability can be executed on the Home Assistant frontend domain, which may be used for a full takeover of the Home Assistant account and installation. These URLs are not subjected to the same scheme validation and thus allow for arbitrary JavaScript execution on the Home Assistant administration page via usage of `javascript\:` scheme URIs. A sequence injection vulnerability exists in Rack 5.0.7 and ` HTML tags on the page.
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