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.
hackerone.com/reports/509315
lists.fedoraproject.org/archives/list/[email protected]/message/BFIVX6HOVNLAM7W3SUAMHYRNLCVQSAWR
lists.fedoraproject.org/archives/list/[email protected]/message/MQ47OFV57Y2DAHMGA5H3JOL4WHRWRFN4
nvd.nist.gov/vuln/detail/CVE-2019-5427
www.oracle.com/security-alerts/cpuapr2020.html
www.oracle.com/security-alerts/cpujan2021.html
www.oracle.com/security-alerts/cpujul2020.html
www.oracle.com/security-alerts/cpuoct2020.html
www.oracle.com/security-alerts/cpuoct2021.html