Multiple SQL injection vulnerabilities in MWNewsletter 1.0.0b allow remote attackers to execute arbitrary SQL commands via the (1) user_email parameter to (a) unsubscribe.php or (b) subscribe.php; or the (2) user_name parameter to subscribe.php.  NOTE: the provenance of this information is unknown; the details are obtained solely from third party information, although it is likely that this was discovered during post-disclosure analysis.