Vulnerability in Apache Software Foundation Apache Commons BeanUtils 1.x

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official 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.

[ Fixes ]Fixes and patches

• Security bulletin: Oracle Virtualization cpuoct2026Vendor patch or bulletin · CERT-FR · oracle.com/security-alerts/cpuoct2026.html, cited by CERT-FR CERTFR-2026-AVI-1354

[ Advisories ]Government CERT advisories

• NCSC-NL21 Oct 2026NCSC-2026-0444

  Vulnerabilities fixed in Oracle Communications Translated from Dutch

  Probability/damage M/HCVE-2025-48734CVE-2026-5450CVE-2026-6653+28 more CVEs
• NCSC-NL21 Oct 2026NCSC-2026-0440

  Vulnerabilities fixed in Oracle Enterprise Manager Translated from Dutch

  Probability/damage M/HCVE-2025-48734CVE-2026-54512CVE-2026-101518+5 more CVEs
• CERT-FR21 Oct 2026CERTFR-2026-AVI-1354

  Multiple vulnerabilities in Oracle Virtualization Translated from French

  Multiple vulnerabilities have been discovered in Oracle Virtualization. Some of them allow an attacker to cause remote arbitrary code execution, remote denial of service and a breach of data confidentiality.

  CVE-2026-101599CVE-2026-87301CVE-2026-87303+4 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4090

  Oracle Communications: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-101763CVE-2026-58389CVE-2026-56740+85 more CVEs
• BSI CERT-Bund20 Oct 2026WID-SEC-2026-4087

  Oracle Enterprise Manager: Multiple vulnerabilities Translated from German

  Risk highCVE-2026-101527CVE-2026-101525CVE-2026-101526+8 more CVEs
• CERT-FR9 Oct 2026CERTFR-2026-AVI-1291

  Multiple vulnerabilities in IBM products Translated from French

  Multiple vulnerabilities have been discovered in IBM products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

  CVE-2026-49978CVE-2025-27895CVE-2026-59651+195 more CVEs

[ References ]References

• lists.apache.org/thread/s0hb3jkfj5f3ryx6c57zqtfohb0of1g9vendor-advisory