REST API unable to make requests with slash (/) in SKU

[mplccp]

Inside the REST API, it is impossible to access a resource that requires an SKU if the SKU contains a forward slash.

Preconditions

1. Tested in CE 2.1.2 and CE 2.1.3. No indication of fix in 2.1.4 release notes

Steps to reproduce

1. Fresh install
2. Create product (of any type) with SKU containing /, e.g. "CLE-056621/6"
3. Make REST request with encoded SKU (as Swagger does) e.g. "V1/products/CLE-056621%2F6", "/V1/products/CLE-056621%2F6/media"

Expected result

1. Should be possible to make a request with encoded SKU, or by product ID

Actual result

1. A request with a slash ("CLE-056621/6") returns "Not found" 404
2. A request with encoded SKU ("CLE-056621%2F6") returns
   { "message": "Requested product doesn't exist" }

[misha-kotov]

Thanks for reporting - internal issue number is MAGETWO-60899.

[AirmanAJK]

It appears that this is an issue with Apache rather than Magento. You might have noticed that the 404 response codes are Apache generated instead of the usual Magento 404 pages. This is because, by default, forward slashes cannot be encoded in URLs without getting rejected. Add the option "AllowEncodedSlashes On" in either your global or virtual host config (or maybe in the Magento .htaccess, though this could be a security risk for users who would never make requests with encoded forward slashes).

This worked for me. Good luck.