Highlights
Cross-Site Scripting: 2 prior fixes. Scrutinize any change in this area.
lib/sanitize.rb: most-fixed (3 issues). Treat as high-risk during review.
4 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.
Cross-Site Scripting: 2 historical fix(es) link lib/sanitize.rb to Cross-Site Scripting.
Code Execution: 1 historical fix(es) link lib/sanitize/css.rb to Code Execution.
Open Redirect: 1 historical fix(es) link lib/sanitize.rb to Open Redirect.