sanic vulnerable to Path Traversal when using `app.static` if using encoded `%2F` URLs
### Impact
Access to lateral directories when using `app.static` if using encoded `%2F` URLs. Parent directory traversal is not impacted.
### Patches
- v20.12.7 (LTS)
- v21.12.2 (LTS)
- v22.6.1
### References
https://github.com/sanic-org/sanic/issues/2478
https://github.com/sanic-org/sanic/pull/2495
### For more information
If you have any questions or comments about this advisory:
* Open an issue in the community forums
https://community.sanicframework.org/
* Ping us on the Discord server
https://discord.gg/FARQzAEMAA