VULNERABILITY INTELLIGENCE
CVE-2014-3660
CVSS score5 MEDIUM
EPSS probability3.78%
CISA KEVNot currently listed
Published2014-11-04
Last modified2026-06-17
CVSS vectorAV:N/AC:L/Au:N/C:N/I:N/A:P
Description
parser.c in libxml2 before 2.9.2 does not properly prevent entity expansion even when entity substitution has been disabled, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted XML document containing a large number of nested entity references, a variant of the "billion laughs" attack.