Highlights
Auth Bypass: 67 prior fixes. Scrutinize any change in this area.
Bugzilla/Bug.pm: most-fixed (18 issues). Treat as high-risk during review.
182 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.
Auth Bypass: Multiple fixes address bypasses in bug visibility and modification checks, often via inconsistent group checks or missing authorization in specific code paths (e.g., product moves, clones, dependency edits).
CSRF: Numerous state-changing endpoints lacked CSRF token validation, allowing cross-site request forgery. Fixes add check_hash_token or similar across many actions, indicating a systemic gap.
Information Disclosure: Multiple fixes prevent leakage of bug summaries, group names, product names, and SQL debug details to unauthorized users, often by adding visibility checks or gating debug output behind groups.