OAuthLib is an implementation of the OAuth request-signing logic for Python
3.6+. In OAuthLib versions 3.1.1 until 3.2.1, an attacker providing
malicious redirect uri can cause denial of service. An attacker can also
leverage usage of `uri_validate` functions depending where it is used.
OAuthLib applications using OAuth2.0 provider support or use directly
`uri_validate` are affected by this issue. Version 3.2.1 contains a patch.
There are no known workarounds.Read More