# com.mchange:c3p0 (Maven) vulnerabilities

4 known vulnerabilities (1 high, 1 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Dependents: 57
- Registry: https://central.sonatype.com/artifact/com.mchange/c3p0

## Advisories (4)

### [CVE-2026-55223](https://cve.now/CVE-2026-55223): c3p0 exposes a deserialization "sink" via JDBC DataSource bean properties

- Severity: Medium 6.3
- Published: Jun 30, 2026
- Affected: fixed in 0.14.0.

### [CVE-2026-27830](https://cve.now/CVE-2026-27830): c3p0 vulnerable to Remote Code Execution via unsafe deserialization of userOverridesAsString property

- Severity: High 8.9
- Published: Feb 26, 2026
- Affected: fixed in 0.12.0.

### [CVE-2019-5427](https://cve.now/CVE-2019-5427): c3p0 version \< 0.9.5.4 may be exploited by a billion laughs attack when loading XML configuration due to missing protections against…

- Severity: Unrated
- Published: Apr 22, 2019
- Affected: fixed in 0.9.5.4.

### [CVE-2018-20433](https://cve.now/CVE-2018-20433): c3p0 0.9.5.2 allows XXE in extractXmlConfigFromInputStream in com/mchange/v2/c3p0/cfg/C3P0ConfigXmlUtils.java during initialization.

- Severity: Unrated
- Published: Dec 24, 2018
- Affected: fixed in 0.9.5.3.

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