ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undicis ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process.
Patches
Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.
Weakness
An exception is thrown from a function, but it is not caught.