Gentoo Linux Security Advisory GLSA 200410-06 – CUPS leaks information about user names and passwords when using remote printing to SMB-shared printers which require authentication.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/34623/glsa-200410-06.txt
Source: https://packetstormsecurity.com/files/34623/Gentoo-Linux-Security-Advisory-200410-6.html