{"id":48587,"date":"2025-06-03T18:06:46","date_gmt":"2025-06-03T18:06:46","guid":{"rendered":""},"modified":"2025-08-31T13:06:13","modified_gmt":"2025-08-31T19:06:13","slug":"cve-2025-48734-critical-access-control-vulnerability-in-apache-commons-beanutils","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-48734-critical-access-control-vulnerability-in-apache-commons-beanutils\/","title":{"rendered":"CVE-2025-48734: Critical Access Control Vulnerability in Apache Commons BeanUtils<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

The cybersecurity world is constantly evolving, with new vulnerabilities surfacing almost daily. Recently, a prominent vulnerability named CVE-2025-48734 has caught the attention of cybersecurity professionals. This vulnerability is particularly concerning because it affects the Apache<\/a> Commons BeanUtils, a widely-used open-source library in Java development. It poses a serious threat due to its potential for system compromise<\/a> or data leakage, impacting a vast number of applications and systems that depend on the Apache Commons BeanUtils.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-48734
\nSeverity: Critical (CVSS 8.8)
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise<\/a> or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Apache Commons<\/a> BeanUtils 1.x | Before 1.11.0
\nApache Commons BeanUtils 2.x | Before 2.0.0-M2<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The vulnerability lies in the BeanIntrospector class<\/a>, which was added in version 1.9.2 of Apache Commons BeanUtils, to prevent attackers from exploiting the declared class property of Java enum objects. This protection, however, was not enabled by default, leaving an opening for attackers.
\nIf an application using Commons BeanUtils passes property paths from an external<\/a> source directly to the getProperty() method of PropertyUtilsBean, an attacker can access the enum\u2019s class loader via the \u201cdeclaredClass\u201d property. This access allows remote attackers to execute arbitrary code<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Consider a scenario where a malicious actor submits a request to an endpoint that uses the Apache Commons BeanUtils library to process Java<\/a> Bean properties. In this example, the malicious actor might craft a payload to exploit<\/a> the ‘declaredClass’ property of an enum.<\/p>\n

POST \/vulnerable\/endpoint HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ \"propertyPath\": \"targetEnum.declaredClass\" }<\/code><\/pre>\n
In this scenario, the server would then process this request using the vulnerable<\/a> version of Apache Commons BeanUtils. The malicious actor can then leverage this access to the class loader to execute arbitrary code<\/a>, potentially leading to a full system compromise.<\/p>\n
Recommendations for Mitigation<\/strong><\/p>\n
Users of the affected versions of Apache Commons BeanUtils are strongly advised to upgrade to version 1.11.0 for 1.x users or 2.0.0-M2 for 2.x users, as these versions contain the necessary fixes to mitigate this vulnerability<\/a>.
\nIn cases where immediate patching is not feasible, implementing a web application firewall (WAF) or intrusion detection system (IDS) can serve as temporary mitigation. However, the long-term solution is to apply the vendor patch to fully address the vulnerability<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview The cybersecurity world is constantly evolving, with new vulnerabilities surfacing almost daily. Recently, a prominent vulnerability named CVE-2025-48734 has caught the attention of cybersecurity professionals. This vulnerability is particularly concerning because it affects the Apache Commons BeanUtils, a widely-used open-source library in Java development. It poses a serious threat due to its potential for […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[103],"product":[],"attack_vector":[],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-48587","post","type-post","status-publish","format-standard","hentry","category-uncategorized","vendor-apache"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t