Affected versions of this package are vulnerable to Asymmetric Resource Consumption (Amplification) in the firstPhasePreProcess method, where the **/.. transform clones a globParts entry and pushes the clone back onto the same array inside a do...while (didSomething) fixpoint loop. An attacker can exhaust CPU and memory by supplying a glob pattern whose **/.. sequences regenerate entries during preprocessing, which secondPhasePreProcess then compares in an O(n^2) pairwise partsMatch pass over the expanded set. Exploitation requires the pattern to be parsed with optimizationLevel set to 2 or higher.