We've gotten some reports in one of our Catalyst applications that users are "swapping places". ie, they are suddenly logged in as another user, or someone has accessed their account. I've done some quick looking and don't see anything unusual.

I was wondering if it could possibly be session key collisions? Have any of you experienced this?

I'm using the following session plugins:

 Session (0.13)
 Session::Store::Memcached (0.2 current)
 Session::State::Cookie (0.06)

They are not the most current versions, although I don't see anything in the changelog relating to session collisions.

Also, does anyone have advice on how to institute some debugging to try to catch these session collisions? I was thinking of storing their username in a separate cookie, and checking this cookie when we load a session to make sure that they match, similarly to how the verify_address functionality works.

Thanks!
Jim

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