CVE-2016-9180: perl-XML-Twig: The option to `expand_external_ents`, documented as controlling external entity expansion in...

Security readout for executives and security teams

CVE-2016-9180 is a flaw in Perl XML::Twig where a setting meant to disable external entity expansion does not actually work. Systems that parse attacker-supplied XML and rely on that setting may process external entities anyway. The provided sources do not give CVSS, exact affected versions, or confirmed exploitation. Likely exposure is limited to Perl applications or packaged software using XML::Twig to parse XML, especially untrusted XML, while depending on expand_external_ents to suppress external entities. The source bundle does not identify exact affected versions or complete product CPEs. Treat this as an inventory and dependency-validation issue unless XML parsing of untrusted input is business-critical. Prioritize systems that process external XML feeds, uploads, or integrations using Perl XML::Twig. Mitigation focus: Inventory Perl XML::Twig usage in applications and packaged dependencies.; Check CVE and vendor advisories for applicable fixed packages or guidance.; Apply relevant distribution updates where openSUSE or other vendor advisories apply..

Prepared

Jun 13, 2026, 12:51 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.