xfce4-settings does not sufficiently sanitize URLs opened via xdg4-mime- helper-tool (which is called when a user clicks a link in e.g. Firefox).
[ 1 ] CVE-2022-45062 https://nvd.nist.gov/vuln/detail/CVE-2022-45062
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/202305-05
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Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
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There is no known workaround at this time.