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.

Metrics

 

CVSS Version 4.0 CVSS Version 3.x CVSS Version 2.0

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score:  N/A

NVD assessment not yet provided.

ADP:  CISA-ADP

Base Score:  8.8 HIGH

Vector:  CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS 2.0 Severity and Vector Strings:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.openwall.com/lists/oss-security/2025/05/28/6	Mailing List  Third Party Advisory
https://lists.apache.org/thread/s0hb3jkfj5f3ryx6c57zqtfohb0of1g9	Mailing List  Vendor Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
NVD-CWE-Other	Other	NIST
CWE-284	Improper Access Control	Apache Software Foundation

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Initial Analysis by NIST 6/09/2025 2:56:26 PM

Action	Type	Old Value	New Value
Added	CWE		NVD-CWE-Other
Added	CPE Configuration		OR *cpe:2.3:a:apache:commons_beanutils:*:*:*:*:*:*:*:* versions from (including) 1.0 up to (excluding) 1.11.0 *cpe:2.3:a:apache:commons_beanutils:2.0.0:milestone1:*:*:*:*:*:*
Added	Reference Type		Apache Software Foundation: https://lists.apache.org/thread/s0hb3jkfj5f3ryx6c57zqtfohb0of1g9 Types: Mailing List, Vendor Advisory
Added	Reference Type		CVE: http://www.openwall.com/lists/oss-security/2025/05/28/6 Types: Mailing List, Third Party Advisory

CVE Modified by CVE 5/28/2025 2:15:27 PM

Action	Type	Old Value	New Value
Added	Reference		http://www.openwall.com/lists/oss-security/2025/05/28/6

CVE Modified by CISA-ADP 5/28/2025 10:15:34 AM

Action	Type	Old Value	New Value
Added	CVSS V3.1		AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

New CVE Received from Apache Software Foundation 5/28/2025 10:15:34 AM

Action	Type	Old Value	New Value
Added	Description		Record truncated, showing 500 of 1620 characters. View Entire Change Record 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
Added	CWE		CWE-284
Added	Reference		https://lists.apache.org/thread/s0hb3jkfj5f3ryx6c57zqtfohb0of1g9