CVE-2023-22467: Inefficient Regular Expression Complexity

Luxon is a library for working with dates and times in JavaScript. On the 1.x branch prior to 1.38.1, the 2.x branch prior to 2.5.2, and the 3.x branch on 3.2.1, Luxon's DateTime.fromRFC2822 has quadratic N^2 complexity on some specific inputs. This causes a noticeable slowdown for inputs with...