Morning Edition · Monday, August 31, 2026Published at 1:50 AM EDT · New York

Polygon Discloses Denial-of-Service Flaws It Patched Through Two Hard Forks Before Publishing the Details

One defect let a crafted transaction force validators into excessive processing on the Heimdall client, and another let a block producer crash peer nodes with an oversized data field.

Polygon published details of several security defects it had already fixed in its Austin and Kyoto hard forks, following the standard practice of shipping and testing patches first and disclosing afterwards. The flaws affected both of Polyg…