>From Bugtraq:

  | ---------------------------------------------------------------------
  |                    Red Hat, Inc. Security Advisory
  | 
  | Synopsis:          New Netscape packages available
  | Advisory ID:       RHSA-2000:109-05
  | Issue date:        2000-11-17
  | Updated on:        2000-11-27
  | Product:           Red Hat Linux
  | Keywords:          netscape HTML buffer overflow
  | Cross references:  N/A
  | ---------------------------------------------------------------------
  | 
  | 1. Topic:
  | 
  | New Netscape packages are available that fix a buffer overflow
  | in parsing HTML.
  | 
  | It is recommended that all Netscape users update to the fixed
  | packages.
  | 
  | [...]
  | 
  | 3. Problem description:
  | 
  | A buffer overflow exists in Netscape's HTML parsing code. By
  | using specially designed code, a remote website could cause
  | arbitrary code to be run on the local machine.

Now there is a hole.  Gives a hole new meaning to "dynamic html".

David