openhole exposes localhost to the internet in one command. In 0.1.1 and earlier, openhole-server in internal/server/public_proxy.go forwarded r.URL.Path instead of preserving the original request target with r.URL.EscapedPath(), allowing percent encoded dot segments %2e and separators %2f to reach tunneled local services as ../ and / for path traversal. This issue is fixed in version 0.1.2.
https://github.com/bablilayoub/openhole/security/advisories/GHSA-fh2f-xfxc-q9cc
https://github.com/bablilayoub/openhole/releases/tag/v0.1.2
https://github.com/bablilayoub/openhole/commit/a28c27adde2a7ed0c347b730c8707208c0f78ed3