SimpleGeo python-oauth2 does not check the nonce allowing replay attacks
The Server.verify_request function in SimpleGeo python-oauth2 does not check the nonce, which allows remote attackers to perform replay attacks via a signed URL.
The vulnerability does not appear to be patched according to the following [discussion](https://github.com/joestump/python-oauth2/issues/129#issuecomment-895911502).