{"cve":"CVE-2014-3660","nvd":{"published":"2014-11-04T16:55:06.043","modified":"2026-06-17T00:08:42.133","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705","http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html","http://lists.apple.com/archives/security-announce/2015/Aug/msg00002.html","http://lists.opensuse.org/opensuse-updates/2014-10/msg00034.html","http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html"],"products":["apple:mac_os_x","canonical:ubuntu_linux","debian:debian_linux","redhat:enterprise_linux","xmlsoft:libxml2"],"source":"nvd","synced_at":"2026-10-19T20:34:45.729216538+00:00"},"epss":{"cve":"CVE-2014-3660","score":0.03782,"percentile":0.89957,"date":"2026-10-31"},"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."]}