Highlights
Auth Bypass: 1 prior fix. Scrutinize any change in this area.
pkg/proxy/proxy_server.go: most-fixed (2 issues). Treat as high-risk during review.
1 high-severity fix 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: Flaws in compiling access filters from configuration parameters can lead to open proxy configurations. Specifically, empty string handling in regular expression compilation rules could allow requests to completely bypass intended security filters.
SSRF: Improper handling of the request destination host during connection upgrades can enable SSRF or malicious redirection, as the proxy may trust client-supplied headers instead of pinning requests to the location host.