CVE-2017-18924

** DISPUTED ** oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states ‘As RFC7636 is an extension, I think the claim in the Readme of «RFC 6749 compliant» is valid and not misleading and I also therefore wouldn’t describe this as a «vulnerability» with the library per se.’