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.Referenceshttps://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.htmlhttps://www.oracle.com/security-alerts/cpujul2020.htmlhttps://hackerone.com/reports/509315https://www.oracle.com/security-alerts/cpuoct2020.htmlhttps://www.oracle.com/security-alerts/cpujan2021.htmlhttps://www.oracle.com/security-alerts/cpuoct2021.html