Highlights
Resource Exhaustion / DoS: 2 prior fixes. Scrutinize any change in this area.
.github/workflows/ci.yml: most-fixed (2 issues). Treat as high-risk during review.
6 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.
Code Execution: Unsafe Ruby Marshal deserialization allows arbitrary code execution from crafted serialized data; replaced with explicit deep_copy.
Auth Bypass: Allowing API key override with client_secret can bypass authentication; must enforce strict credential separation.
Response Confusion / Connection Reuse: Interrupted requests leave stale responses that can be misattributed; requires discarding connections on exceptions.