Highlights
Prototype Pollution: 2 prior fixes. Scrutinize any change in this area.
index.js: most-fixed (2 issues). Treat as high-risk during review.
2 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.
Prototype Pollution: The core recursive merge function in index.js historically failed to validate keys, permitting attackers to inject properties into Object.prototype via '__proto__' or 'constructor' chains. This has been targeted by multiple high-severity vulnerabilities requiring stringent blocklist defenses.