Unsafe characters in next argument break login

Bug #1539615 reported by Roberto Alsina
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Canonical SSO provider
New
Undecided
Unassigned

Bug Description

If you access a URL like https://login.ubuntu.com/openid/login/?next=/bar+foo/ with a + in the next argument, SSO wil not log you in.

Even logged in, instead of redirecting me to a 404 (like the same URL without the + does) it asks for user/password again.

This is not critical because "+" should be urlencoded anyway, but login should not be refused because of a broken next argument.

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