Disclosure summary
XStream is a simple library to serialize objects to XML and back again. In affected versions this vulnerability may allow a remote attacker to load and execute arbitrary code from a remote 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.
Source-reported weakness categories
CWE-434, CWE-502
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2021-39151
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| xstream | xstream | * {"versionEndExcluding":"1.4.18"} |
| fedoraproject | fedora | 33 |
| fedoraproject | fedora | 34 |
| fedoraproject | fedora | 35 |
| debian | debian_linux | 9.0 |
| debian | debian_linux | 10.0 |
| debian | debian_linux | 11.0 |
| netapp | snapmanager | - |
| netapp | snapmanager | - |
| oracle | business_activity_monitoring | 12.2.1.4.0 |
| oracle | commerce_guided_search | 11.3.2 |
| oracle | communications_billing_and_revenue_management_elastic_charging_engine | 11.3 |
| oracle | communications_billing_and_revenue_management_elastic_charging_engine | 12.0 |
| oracle | communications_cloud_native_core_automated_test_suite | 1.9.0 |
| oracle | communications_cloud_native_core_binding_support_function | 1.10.0 |
| oracle | communications_cloud_native_core_policy | 1.14.0 |
| oracle | communications_unified_inventory_management | 7.3.4 |
| oracle | communications_unified_inventory_management | 7.3.5 |
| oracle | communications_unified_inventory_management | 7.4.0 |
| oracle | communications_unified_inventory_management | 7.4.1 |
| oracle | communications_unified_inventory_management | 7.4.2 |
| oracle | retail_xstore_point_of_service | 16.0.6 |
| oracle | retail_xstore_point_of_service | 17.0.2 |
| oracle | retail_xstore_point_of_service | 18.0.3 |
| oracle | retail_xstore_point_of_service | 19.0.2 |
| oracle | retail_xstore_point_of_service | 20.0.1 |
| oracle | utilities_framework | 4.2.0.2.0 |
| oracle | utilities_framework | 4.2.0.3.0 |
| oracle | utilities_framework | 4.3.0.1.0 |
| oracle | utilities_framework | 4.3.0.6.0 |
| oracle | utilities_framework | 4.4.0.0.0 |
| oracle | utilities_framework | 4.4.0.2.0 |
| oracle | utilities_framework | 4.4.0.3.0 |
| oracle | utilities_testing_accelerator | 6.0.0.1.1 |
| oracle | webcenter_portal | 12.2.1.3.0 |
| oracle | webcenter_portal | 12.2.1.4.0 |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.fedoraproject.org — Mailing List
- lists.fedoraproject.org — Mailing List
- lists.fedoraproject.org — Mailing List
- security.netapp.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Third Party Advisory
- x-stream.github.io — Exploit, Third Party Advisory
- github.com — Third Party Advisory
- lists.debian.org — Mailing List, Third Party Advisory
- lists.fedoraproject.org — Mailing List
- lists.fedoraproject.org — Mailing List
- lists.fedoraproject.org — Mailing List
- security.netapp.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Third Party Advisory
- x-stream.github.io — Exploit, Third Party Advisory
PUBLISHED 2021-08-23T14:15:12-04:00
MODIFIED 2026-10-07T17:17:04-04:00
INGESTED 2026-10-08T12:30:35-04:00