Surojeet Ghosh created KAFKA-19359:
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             Summary: [8.8] [CVE-2025-48734] [commons-beanutils] [1.9.4]
                 Key: KAFKA-19359
                 URL: https://issues.apache.org/jira/browse/KAFKA-19359
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 4.0.0
            Reporter: Surojeet Ghosh


This security defect has been flagged by *aqua container scan.* Description of 
security defect is given below :-



*Aqua Description :* Improper Access Control vulnerability in Apache Commons.

A special BeanIntrospector class was added in version 1.9.2. This can be used 
to stop attackers from using the declared class property of Java enum objects 
to get access to the classloader. However this protection was not enabled by 
default. PropertyUtilsBean (and consequently BeanUtilsBean) now disallows 
declared class level property access by default.

Releases 1.11.0 and 2.0.0-M2 address a potential security issue when accessing 
enum properties in an uncontrolled way. If an application using Commons 
BeanUtils passes property paths from an external source directly to the 
getProperty() method of PropertyUtilsBean, an attacker can access the enum's 
class loader via the "declaredClass" property available on all Java "enum" 
objects. Accessing the enum's "declaredClass" allows remote attackers to access 
the ClassLoader and execute arbitrary code. The same issue exists with 
PropertyUtilsBean.getNestedProperty().
Starting in versions 1.11.0 and 2.0.0-M2 a special BeanIntrospector suppresses 
the "declaredClass" property. Note that this new BeanIntrospector is enabled by 
default, but you can disable it to regain the old behavior; see section 2.5 of 
the user's guide and the unit tests.

This issue affects Apache Commons BeanUtils 1.x before 1.11.0, and 2.x before 
2.0.0-M2.Users of the artifact commons-beanutils:commons-beanutils

1.x are recommended to upgrade to version 1.11.0, which fixes the issue.

Users of the artifact org.apache.commons:commons-beanutils2

2.x are recommended to upgrade to version 2.0.0-M2, which fixes the issue.

*My Review*

I checked this defect is due to commons-validator version 1.9.0 used in kafka 
v4.0.0.



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