Kan. Stat. § 79-2804b
Legal or equitable actions or proceedings may be brought to open, vacate, modify or set aside any judgment rendered for taxes, interest and costs or any order of sale made under the provisions of K.S.A. 79-2803, or amendments thereto, or any sale made under the provisions of K.S.A. 79-2804, or any amendments thereof, but every such action or proceeding, including those brought to set aside judgments on the grounds and in the manner prescribed by the code of civil procedure, must be commenced within twelve months after the date the sale of the real estate, which was affected by such judgment, order of sale or sale, was confirmed by the court. The time limitation herein fixed for the bringing of any such action or proceeding shall be construed as a condition precedent to the bringing of any such action or proceeding and shall not be construed as a statute of limitations.
The petition in every such action or proceeding shall show that such action or proceeding was commenced within the time herein limited. If any such action or proceeding is not commenced within the time herein limited, or if the petition in any such action or proceeding shall not show that such action or proceeding was so commenced, the court shall have no jurisdiction of such action or proceeding. The provisions of this section shall apply to all judgments, orders of sale, and sales whether the purchaser at the foreclosure sale be the county or an individual.
K.S.A. 79-2804b