Highlights
Memory Safety: 53 prior fixes. Scrutinize any change in this area.
ext/standard/http_fopen_wrapper.c: most-fixed (9 issues). Treat as high-risk during review.
89 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: 6 historical fix(es) link ext/pgsql/pgsql.c to SQL Injection.
Memory Safety: 4 historical fix(es) link ext/mysqlnd/mysqlnd_wireprotocol.c to Memory Safety.
SSRF: 4 historical fix(es) link main/streams/xp_socket.c to SSRF.