Anubis: Policy bypass via client controlled X-Original-URI header

Any HTTP client can bypass Anubis bot protection on the default configuration by adding a single request header. No challenge needs to be solved. Affected versions: v1.22.0 through v1.25.0 introduced in commit d1d631a, PR 1015 The root cause is in lib/policy/checker.go, PathChecker.Check: go func...