# CVE-2018-20433: XML External Entity Reference in mchange:c3p0

Source: https://junglewise.ai/threats/cve-2018-20433-xml-external-entity-reference-in-mchange-c3p0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-01-07  
License: CC BY 4.0 with a link back

CVE-2018-20433 · Severity: low · CVSS 3 · Published 2019-01-07

XML External Entity Reference in mchange:c3p0

Technologies: [com.mchange:c3p0 (Maven)](https://junglewise.ai/threats/technologies/com-mchange-c3p0). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2018-20433 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-20433 being exploited in the wild.

**How severe is CVE-2018-20433?** Low severity, with a CVSS score of 3, published 7 January 2019.

**Which products and versions are affected?** com.mchange:c3p0 (Maven) ECOSYSTEM:introduced=0,fixed=0.9.5.3.

**Is there a fix for CVE-2018-20433?** Yes. com.mchange:c3p0 (Maven): upgrade to 0.9.5.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-20433?** Check whether you run com.mchange:c3p0 (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- com.mchange:c3p0 (Maven): upgrade to 0.9.5.3 or later

  ```sh
  # set com.mchange:c3p0 to 0.9.5.3 in your pom.xml or build.gradle
  ```


## Affected products

- com.mchange:c3p0 (Maven) ECOSYSTEM:introduced=0,fixed=0.9.5.3

## Identifiers

- CVE-2018-20433
- GHSA-q485-j897-qc27

## Related threats

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- [swaldman c3p0 insecure deserialization in userOverridesAsString](https://junglewise.ai/threats/cve-2026-27830-swaldman-c3p0-insecure-deserialization-in-useroverridesasstring)
- [Billion laughs attack in c3p0](https://junglewise.ai/threats/cve-2019-5427-billion-laughs-attack-in-c3p0)