SQL injection vulnerability in Watchguard XCS 9.2 and 10.0 before build 150522 allows remote attackers to execute arbitrary SQL commands via the sid cookie, as demonstrated by a request to borderpost/imp/compose.php3.
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.