KDE Security Advisory: Kate / Kwrite create a file backup before saving a modified file. These backup files are created with default permissions, even if the original file had more strict permissions set. Depending on the system security settings, backup files might be readable by other users. All maintained versions of Kate and Kwrite as shipped with KDE 3.2.x up to including 3.4.0. KDE 3.1.x and older and KDE 3.4.1 and newer are not affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/38760/advisory-20050718-1.txt
Source: https://packetstormsecurity.com/files/38760/KDE-Security-Advisory-2005-07-18.1.html