CVE-2026-27727

9.8 CRITICAL
Published: February 25, 2026 Modified: March 11, 2026
View on NVD

Description

mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote `factoryClassLocation` values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted `jaxax.naming.Reference` or serialized object, they can provoke the download and execution of malicious code. Implementations of this functionality within the JDK were disabled by default behind a System property that defaults to `false`, `com.sun.jndi.ldap.object.trustURLCodebase`. However, since mchange-commons-java includes an independent implementation of JNDI derefencing, libraries (such as c3p0) that resolve references via that implementation could be provoked to download and execute malicious code even after the JDK was hardened. Mirroring the JDK patch, mchange-commons-java's JNDI functionality is gated by configuration parameters that default to restrictive values starting in version 0.4.0. No known workarounds are available. Versions prior to 0.4.0 should be avoided on application CLASSPATHs.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/swaldman/mchange-commons-java/security/advisories/GHSA-m2cm-222f-qw44
Source: security-advisories@github.com
Patch Vendor Advisory
https://mogwailabs.de/en/blog/2025/02/c3p0-you-little-rascal
Source: security-advisories@github.com
Exploit Third Party Advisory
https://www.mchange.com/projects/c3p0/#configuring_security
Source: security-advisories@github.com
Issue Tracking
https://www.mchange.com/projects/c3p0/#security-note
Source: security-advisories@github.com
Release Notes

4 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
0.1%
27th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

mchange