# CVE-2026-55153: libc3p0-java: mchange-commons-java is a Java library of shared utility classes used by mchange projects like the c3p0 connection pool

CVE-2026-55153 is fixed in libc3p0-java on 1 platform, first by libc3p0-java 0.9.1.2-9+deb8u1ubuntu0.18.04.1+esm1, released July 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-55153
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 1, 2026

## Description

mchange-commons-java is a Java library of shared utility classes used by mchange projects like the c3p0 connection pool. Prior to version 0.6.0, its JNDI ObjectFactory implementation (com.mchange.v2.naming.JavaBeanObjectFactory) will construct objects of arbitrary classes and initialize "JavaBean"-style properties, which for certain classes enables JNDI injection and "deserialization gadgets." Such initialization is unsafe for some classes: for example, setting the contentType property of a Swing JEditorPane to text/html and its text property to HTML containing a stylesheet <link> will provoke an HTTP GET on an arbitrary URL, potentially from within a trusted security domain. The problem is aggravated by the library's ReferenceIndirector, through which malicious JNDI Reference objects can be smuggled in for dereferencing wherever an application reads a Java-serialized object. This has been resolved in version 0.6.0.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libc3p0-java Ubuntu 18.04.6 LTS (bionic) | 0.9.1.2-9+deb8u1ubuntu0.18.04.1+esm1 | [libc3p0-java 0.9.1.2-9+deb8u1ubuntu0.18.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc3p0-java-0.9.1.2-9-deb8u1ubuntu0.18.04.1-esm1.md) | Jul 1, 2026 |
| Linux | libc3p0-java Ubuntu 20.04 LTS (focal) | 0.9.1.2-10ubuntu0.20.04.1+esm1 | [libc3p0-java 0.9.1.2-10ubuntu0.20.04.1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc3p0-java-0.9.1.2-10ubuntu0.20.04.1-esm1.md) | Jul 1, 2026 |
| Linux | libc3p0-java Ubuntu 22.04.1 LTS (jammy) | 0.9.1.2-10ubuntu1+esm1 | [libc3p0-java 0.9.1.2-10ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc3p0-java-0.9.1.2-10ubuntu1-esm1.md) | Jul 1, 2026 |
| Linux | libc3p0-java Ubuntu 24.04.5 LTS (noble) | 0.9.1.2-10ubuntu2+esm1 | [libc3p0-java 0.9.1.2-10ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc3p0-java-0.9.1.2-10ubuntu2-esm1.md) | Jul 1, 2026 |
| Linux | libc3p0-java Ubuntu 26.04.1 LTS (resolute) | 0.9.1.2-11ubuntu0.1~esm1 | [libc3p0-java 0.9.1.2-11ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc3p0-java-0.9.1.2-11ubuntu0.1-esm1.md) | Jul 1, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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