Xdg-Utils is a set of tools allowing all applications to easily integrate with the Free Desktop configuration.
An eval injection vulnerability was discovered in Xdg-Utils.
A context-dependent attacker could execute arbitrary code via the URL argument to xdg-open.
There is no known workaround at this time.
All Xdg-Utils users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-misc/xdg-utils-1.1.1"