{"cve":"CVE-2016-4449","nvd":{"published":"2016-06-09T16:59:07.800","modified":"2026-06-17T00:47:34.880","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H","score":7.1},"cwes":["CWE-20"],"references":["http://jvn.jp/en/jp/JVN17535578/index.html","http://jvndb.jvn.jp/en/contents/2017/JVNDB-2017-000066.html","http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html","http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html","http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html"],"products":["canonical:ubuntu_linux","debian:debian_linux","xmlsoft:libxml2"],"source":"nvd","synced_at":"2026-10-19T20:38:51.654415212+00:00"},"epss":{"cve":"CVE-2016-4449","score":0.01661,"percentile":0.76692,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}