ejabberd -- remote denial of service vulnerability

It’s reported in CVE advisory that:

expat_erl.c in ejabberd before 2.1.7 and 3.x before
3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect
recursion during entity expansion, which allows remote attackers
to cause a denial of service (memory and CPU consumption) via a
crafted XML document containing a large number of nested entity
references, a similar issue to CVE-2003-1564.