Highlights
Path Traversal: 2 prior fixes. Scrutinize any change in this area.
tests/cc.php: most-fixed (2 issues). Treat as high-risk during review.
5 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
SQL Injection: The quote() method failed to escape single quotes, allowing string-literal breakout. This is a classic injection point for any query built via this connection.
SQL Injection: quoteIdentifier() did not escape quote characters, enabling injection via identifiers (e.g., column/table names). The fix touched both the base platform and the MSSQL override, but other platform subclasses may still be vulnerable.
Path Traversal: The showFile() sink allowed arbitrary file disclosure. One fix removed the detailed view entirely; another added a path check for 'Doctrine'. The coexistence of two fixes suggests the first was insufficient or reintroduced, and the current check may be bypassable via symlinks or encoding.