CGI::Session 4.03-1 does not set proper permissions on temporary files created in (1) Driver::File and (2) Driver::db_file, which allows local users to obtain privileged information, such as session keys, by viewing the files.

CGI::Session 4.03-1 allows local users to overwrite arbitrary files via a symlink attack on temporary files used by (1) Driver::File, (2) Driver::db_file, and possibly (3) Driver::sqlite.

SQL injection vulnerability in deleteSession() in DB_eSession library 1.0.2 and earlier, as used in multiple products, allows remote attackers to execute arbitrary SQL commands via the $_sess_id_set variable, which is usually derived from PHPSESSID.