For those using PuTTY to connect to CVS (project members with write CVS access), it might be interesting to upgrade to PuTTY v0.55, since it "fixes a serious security hole".
The same goes for users of FileZilla. Since FileZilla uses PuTTY when connecting to SFTP servers, it was affected too. Therefore, FileZilla 2.2.8 was released.
Update: it appears that FileZilla 2.2.8 has been replaced by FileZilla 2.2.8a. Changelog is the same, though.