You need to talk to a good real estate/foreclosure attorney licensed in the state where the property is located. Your "facts" are confusing, which leads me to think that you might be confused as to title issues.
My best to you.
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Your question makes no sense because you would have been able to occupy the property all the way until the foreclosure sale. Also, I would need to know what kind of foreclosure it was (judicial or non-judicial) to know whether or not there is a deficiency judgment. It looks to me that you are concerned about the bank going after you for more money. I need to know more facts. I can arrange a consultation with you if you contact my office by phone or email. 541-476-8825
As the other lawyers have indicated, your facts are not crystal clear. Let me guess: if the home is sold by the county or state due to the nonpayment of taxes, the buyer at the auction may buy the property subject to the mortgage. So it just depends upon the facts. It is unlikely that the property owner has personally liability for the mortgage, but you have to read the mortgage to be certain and it is also probably based on Oregon law. So you have no choice but to hire a lawyer in Oregon to hold your hand through this process.