classifyXSSContext defaulted any non-html, non-script reflection to attribute context. a reflection echoed into element text with the angle brackets escaped but quotes left raw (common for encoders limited to < > &) was then reported as a high-severity attribute injection, even though a quote in text content has no delimiter to break out of.
classify a reflection as attribute only when the canary actually lands inside an open tag; everything else is inert element text and yields no finding. the in-tag test is a byte-scan, not a parser, so rare malformed markup can still mis-bucket.
three active web-vuln probes wired into the per-target loop:
- cors: crafts attacker origins (evil sentinel, null, prefix/suffix
bypass, http downgrade) and flags responses that reflect them in
access-control-allow-origin, ranking reflection+credentials high.
- redirect: injects a controlled sentinel host plus bypass variants
(//, https:/, backslash, null-byte, userinfo @) into redirect-prone
params and catches 30x location, meta-refresh and js redirects that
resolve off-site.
- xss: injects a unique canary wrapped in breaking chars, classifies
the reflection context (html/attribute/script) and reports only the
chars that survive unescaped where they matter, so escaped
reflections don't false-positive.
all route through httpx.Client so proxy/-H/-cookie/-rate-limit apply.
hermetic httptest coverage plus integration testbed entries.
