The Targeted Security Release and Patch updates for 4.5, 5.0, and 5.1 resolve an issue of unsanitized information being used in a SQL query. Using a crafted URL, an attacker could perform an SQL Injection.
The Targeted Security Release and Patch update for 5.2 addresses a security enhancement regression discovered in 5.2.3 and 5.2.4. This regression is not related to the itemized vulnerability mentioned for 4.5, 5.0, and 5.1. The regression was identified internally and is not a candidate for public disclosure.