VULNERABILITY INTELLIGENCE

CVE-2011-1756

CVSS score5 MEDIUM
EPSS probability2.66%
CISA KEVNot currently listed
Published2011-06-21
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P

Description

modules/xmpp/serv_xmpp.c in Citadel 7.86 and earlier 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.

Primary references