Security context

What an agent needs to avoid regressing past fixes and find the next vuln in this repo.

fastify/fast-uri

              main @ e008152
            

Fixes

CVEs

HIGH

Peak severity

100.0%

Coverage

Highlights

SSRF: 4 prior fixes. Scrutinize any change in this area.

index.js: most-fixed (6 issues). Treat as high-risk during review.

5 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.

SSRF: Multiple high-severity fixes address host-confusion between fast-uri and WHATWG URL parser, enabling SSRF and redirect allowlist bypasses through malformed authorities, backslashes, and IDN homographs.

URL Parsing / SSRF: Unescape of reserved authority delimiters allowed host manipulation, a critical bug enabling SSRF by decoding characters that should remain percent-encoded.

URL Parsing / Validation Bypass: Unterminated bracket hosts bypassed percent-encoding validation, allowing malformed URLs to be treated as IP literals and evade checks.