CVE-2016-4449: Canonical Ubuntu Linux

High severity, CVSS 7.1. EPSS: 1.7% chance of exploitation in the next 30 days.

XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 15.10 only; version 16.04 only
• Debian Debian Linux: version 8.0 only
• Xmlsoft LIBXML2: up to and including 2.9.3

Published 2016-06-09. Last modified 2026-06-17.