SB2026091629 - Unsafe reflection in Mchange Commons Java

Description

This security bulletin contains information about 1 vulnerability.

1) Unsafe reflection (CVE-ID: CVE-2026-55153)

CWE-ID: CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

CVSSv4: 7.5 [CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to unsafe reflection in com.mchange.v2.naming.JavaBeanObjectFactory when processing malicious JNDI Reference objects or Java-serialized objects. A remote user can cause an application to process a malicious object to execute arbitrary code.

Known deserialization gadget chains require a JVM prior to Java 16 and affected Apache commons-beanutils and commons-collections libraries on the application classpath.

Remediation

Install update from vendor's website.

References

• https://github.com/advisories/GHSA-h84g-69h7-mw6v
• https://github.com/swaldman/mchange-commons-java/security/advisories/GHSA-h84g-69h7-mw6v