drupal7 -- SQL injection

Drupal Security Team reports:

Drupal 7 includes a database abstraction API to ensure that
queries executed against the database are sanitized to prevent
SQL injection attacks.
A vulnerability in this API allows an attacker to send
specially crafted requests resulting in arbitrary SQL execution.
Depending on the content of the requests this can lead to
privilege escalation, arbitrary PHP execution, or other attacks.
This vulnerability can be exploited by anonymous users.