Debian: DSA-4922-1: hyperkitty security update

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Amir Sarabadani and Kunal Mehta discovered that the import functionality of Hyperkitty, the web user interface to access Mailman 3 archives, did not restrict the visibility of private archives during the import, i.e. that during the import of a private Mailman 2 archive the archive was

Debian: DSA-4920-1: libx11 security update

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Roman Fiedler reported that missing length validation in various functions provided by libx11, the X11 client-side library, allow to inject X11 protocol commands on X clients, leading to authentication bypass, denial of service or potentially the