CVE-2021-39144: XStream Remote Code Execution Vulnerability
High severity, CVSS 8.5. Actively exploited: in CISA KEV since 2023-03-10. EPSS: 98.1% chance of exploitation in the next 30 days.
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker has sufficient rights to execute commands of the host only by manipulating the processed input stream. No user is affected, who followed the recommendation to setup XStream's security framework with a whitelist limited to the minimal required types. XStream 1.4.18 uses no longer a blacklist by default, since it cannot be secured for general purpose.
Affected products
- Debian Debian Linux: version 9.0 only; version 10.0 only; version 11.0 only
- Fedoraproject Fedora: version 33 only; version 34 only; version 35 only
- Netapp Snapmanager: affected versions not specified
- Oracle Business Activity Monitoring: version 12.2.1.4.0 only
- Oracle Commerce Guided Search: version 11.3.2 only
- Oracle Communications Billing And Revenue Management Elastic Charging Engine: version 11.3 only; version 12.0 only
- Oracle Communications Cloud Native Core Automated Test Suite: version 1.9.0 only
- Oracle Communications Cloud Native Core Binding Support Function: version 1.10.0 only
- Oracle Communications Cloud Native Core Policy: version 1.14.0 only
- Oracle Communications Unified Inventory Management: version 7.3.4 only; version 7.3.5 only; version 7.4.0 only; version 7.4.1 only; version 7.4.2 only
- Oracle Retail Xstore Point Of Service: version 16.0.6 only; version 17.0.4 only; version 18.0.3 only; version 19.0.2 only; version 20.0.1 only
- Oracle Utilities Framework: version 4.2.0.2.0 only; version 4.2.0.3.0 only; version 4.3.0.1.0 only; version 4.3.0.6.0 only; version 4.4.0.0.0 only; version 4.4.0.2.0 only; …
- Oracle Utilities Testing Accelerator: version 6.0.0.1.1 only
- Oracle Webcenter Portal: version 12.2.1.3.0 only; version 12.2.1.4.0 only
- XStream XStream: before 1.4.18 (fixed in 1.4.18)
Published 2021-08-23. Last modified 2026-06-17.