CVE-2016-9180
perl-XML-Twig: expand_external_ents option fails to work as documented
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · September 27, 2016
Updated · November 21, 2025
Description
A vulnerability was found in perl-XML-Twig. External entity expansion (XXE) took place regardless of the setting 'expand_external_ents', which was supposed to disable this functionality if set to 0 (the default) or -1. An attacker could craft an XML message which, when processed by an application using perl-XML-Twig, could cause denial of service or, potentially, information disclosure.
Statement
Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 7.1CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
CVSS 2.0 · 5.8AV:N/AC:M/Au:N/C:P/I:N/A:P
CWE-611 · Improper Restriction of XML External Entity Reference