{"cve":"CVE-2019-5427","nvd":{"published":"2019-04-22T21:29:00.523","modified":"2026-06-17T02:37:40.230","status":"Analyzed","description":"c3p0 version < 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against recursive entity expansion when loading configuration.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-776"],"references":["https://hackerone.com/reports/509315","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFIVX6HOVNLAM7W3SUAMHYRNLCVQSAWR/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MQ47OFV57Y2DAHMGA5H3JOL4WHRWRFN4/","https://www.oracle.com/security-alerts/cpuapr2020.html","https://www.oracle.com/security-alerts/cpujan2021.html"],"products":["fedoraproject:fedora","mchange:c3p0","oracle:communications_ip_service_activator","oracle:communications_session_route_manager","oracle:documaker","oracle:enterprise_manager_base_platform","oracle:enterprise_manager_ops_center","oracle:flexcube_private_banking","oracle:hyperion_infrastructure_technology","oracle:retail_xstore_point_of_service","oracle:webcenter_sites"],"source":"nvd","synced_at":"2026-10-19T20:56:19.218283075+00:00"},"epss":{"cve":"CVE-2019-5427","score":0.04882,"percentile":0.92066,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-84p2-vf58-xhxv","url":"https://osv.dev/vulnerability/GHSA-84p2-vf58-xhxv","summary":"Billion laughs attack in c3p0","modified":"2024-02-16T08:07:45.873484Z","packages":[{"ecosystem":"Maven","name":"com.mchange:c3p0","purl":"pkg:maven/com.mchange/c3p0","ranges":["<0.9.5.4"],"fixed":["0.9.5.4"]}]}],"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."]}