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TI-2021-16526 Aliases CVE-2021-39139GHSA-64xx-cq4q-mf44

XStream is vulnerable to an Arbitrary Code Execution attack

Priority MEDIUM 53CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 9 fixed, 10 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-434.

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. A user is only affected if using the version out of the box with JDK 1.7u21 or below. However, this scenario can be adjusted easily to an external Xalan that works regardless of the version of the Java runtime. 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0454 91st percentileScored 2026-11-07
Fix Partial xstream (x-stream): 1.4.18com.thoughtworks.xstream:xstream (Maven): 1.4.18Red Hat: 6 advisoriesRed Hat: 9 fixed, 10 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
XStreamxstreambefore 1.4.181.4.18Patch availableCNA
—com.thoughtworks.xstream:xstream (Maven)before 1.4.181.4.18Patch availableGHSA-64xx-cq4q-mf44
  • xstream VendorXStream Affected before 1.4.18 Fixed in 1.4.18 Patch available CNA
  • com.thoughtworks.xstream:xstream (Maven) Vendor— Affected before 1.4.18 Fixed in 1.4.18 Patch available GHSA-64xx-cq4q-mf44

CPE configurations NVD · 36

CPEVersionsRoleVendor
cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:*before 1.4.18VulnerableXStream
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*11.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:oracle:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:sap:*:*not specified by NVDVulnerableNetApp
cpe:2.3:a:oracle:business_activity_monitoring:12.2.1.4.0:*:*:*:*:*:*:*12.2.1.4.0VulnerableOracle
  • cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:* Versions before 1.4.18 Vulnerable ·XStream
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
  • cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:oracle:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:netapp:snapmanager:-:*:*:*:*:sap:*:* Versions not specified by NVD Vulnerable ·NetApp
  • cpe:2.3:a:oracle:business_activity_monitoring:12.2.1.4.0:*:*:*:*:*:*:* Versions 12.2.1.4.0 Vulnerable ·Oracle
Show 26 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*11.3.2VulnerableOracle
cpe:2.3:a:oracle:communications_billing_and_revenue_management_elastic_charging_engine:11.3:*:*:*:*:*:*:*11.3VulnerableOracle
cpe:2.3:a:oracle:communications_billing_and_revenue_management_elastic_charging_engine:12.0:*:*:*:*:*:*:*12.0VulnerableOracle
cpe:2.3:a:oracle:communications_cloud_native_core_automated_test_suite:1.9.0:*:*:*:*:*:*:*1.9.0VulnerableOracle
cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.10.0:*:*:*:*:*:*:*1.10.0VulnerableOracle
cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*1.14.0VulnerableOracle
cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.4:*:*:*:*:*:*:*7.3.4VulnerableOracle
cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.5:*:*:*:*:*:*:*7.3.5VulnerableOracle
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.0:*:*:*:*:*:*:*7.4.0VulnerableOracle
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.1:*:*:*:*:*:*:*7.4.1VulnerableOracle
cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.2:*:*:*:*:*:*:*7.4.2VulnerableOracle
cpe:2.3:a:oracle:retail_xstore_point_of_service:16.0.6:*:*:*:*:*:*:*16.0.6VulnerableOracle
cpe:2.3:a:oracle:retail_xstore_point_of_service:17.0.4:*:*:*:*:*:*:*17.0.4VulnerableOracle
cpe:2.3:a:oracle:retail_xstore_point_of_service:18.0.3:*:*:*:*:*:*:*18.0.3VulnerableOracle
cpe:2.3:a:oracle:retail_xstore_point_of_service:19.0.2:*:*:*:*:*:*:*19.0.2VulnerableOracle
cpe:2.3:a:oracle:retail_xstore_point_of_service:20.0.1:*:*:*:*:*:*:*20.0.1VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.2.0.2.0:*:*:*:*:*:*:*4.2.0.2.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.2.0.3.0:*:*:*:*:*:*:*4.2.0.3.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.3.0.1.0:*:*:*:*:*:*:*4.3.0.1.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.3.0.6.0:*:*:*:*:*:*:*4.3.0.6.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.4.0.0.0:*:*:*:*:*:*:*4.4.0.0.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.4.0.2.0:*:*:*:*:*:*:*4.4.0.2.0VulnerableOracle
cpe:2.3:a:oracle:utilities_framework:4.4.0.3.0:*:*:*:*:*:*:*4.4.0.3.0VulnerableOracle
cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.1.1:*:*:*:*:*:*:*6.0.0.1.1VulnerableOracle
cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:*12.2.1.3.0VulnerableOracle
cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:*12.2.1.4.0VulnerableOracle
  • cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:* Versions 11.3.2 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_billing_and_revenue_management_elastic_charging_engine:11.3:*:*:*:*:*:*:* Versions 11.3 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_billing_and_revenue_management_elastic_charging_engine:12.0:*:*:*:*:*:*:* Versions 12.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_cloud_native_core_automated_test_suite:1.9.0:*:*:*:*:*:*:* Versions 1.9.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.10.0:*:*:*:*:*:*:* Versions 1.10.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:* Versions 1.14.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.4:*:*:*:*:*:*:* Versions 7.3.4 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_unified_inventory_management:7.3.5:*:*:*:*:*:*:* Versions 7.3.5 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.0:*:*:*:*:*:*:* Versions 7.4.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.1:*:*:*:*:*:*:* Versions 7.4.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:communications_unified_inventory_management:7.4.2:*:*:*:*:*:*:* Versions 7.4.2 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:retail_xstore_point_of_service:16.0.6:*:*:*:*:*:*:* Versions 16.0.6 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:retail_xstore_point_of_service:17.0.4:*:*:*:*:*:*:* Versions 17.0.4 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:retail_xstore_point_of_service:18.0.3:*:*:*:*:*:*:* Versions 18.0.3 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:retail_xstore_point_of_service:19.0.2:*:*:*:*:*:*:* Versions 19.0.2 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:retail_xstore_point_of_service:20.0.1:*:*:*:*:*:*:* Versions 20.0.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.2.0.2.0:*:*:*:*:*:*:* Versions 4.2.0.2.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.2.0.3.0:*:*:*:*:*:*:* Versions 4.2.0.3.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.3.0.1.0:*:*:*:*:*:*:* Versions 4.3.0.1.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.3.0.6.0:*:*:*:*:*:*:* Versions 4.3.0.6.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.4.0.0.0:*:*:*:*:*:*:* Versions 4.4.0.0.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.4.0.2.0:*:*:*:*:*:*:* Versions 4.4.0.2.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_framework:4.4.0.3.0:*:*:*:*:*:*:* Versions 4.4.0.3.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.1.1:*:*:*:*:*:*:* Versions 6.0.0.1.1 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:webcenter_portal:12.2.1.3.0:*:*:*:*:*:*:* Versions 12.2.1.3.0 Vulnerable ·Oracle
  • cpe:2.3:a:oracle:webcenter_portal:12.2.1.4.0:*:*:*:*:*:*:* Versions 12.2.1.4.0 Vulnerable ·Oracle

Remediation

  • Fix · CNA xstream (x-stream) Fixed in 1.4.18
  • Fix · GHSA-64xx-cq4q-mf44 com.thoughtworks.xstream:xstream (Maven) Fixed in 1.4.18 Advisory →

Red Hat 6 advisories

  • RHSA-2022:0520 Released 2022-02-14 · Red Hat rating Moderate
    Red Hat Data Grid 8.3.0 security update
    • Red Hat Data Grid 8.3.0
  • RHSA-2022:0297 Released 2022-01-26 · Red Hat rating Moderate
    Red Hat Decision Manager 7.12.0 security update
    • RHDM 7.12.0
  • RHSA-2022:0296 Released 2022-01-26 · Red Hat rating Critical
    Red Hat Process Automation Manager 7.12.0 security update
    • RHPAM 7.12.0
Show 3 more Red Hat advisories
  • RHSA-2021:4918 Released 2021-12-02 · Red Hat rating Moderate
    Red Hat Integration Camel-K 1.6 release and security update
    • Red Hat Integration
  • RHSA-2021:4767 Released 2021-11-23 · Red Hat rating Moderate
    Red Hat Integration Camel Extensions for Quarkus GA security update
    • Red Hat Integration Camel Quarkus 2
  • RHSA-2021:3956 Released 2021-10-25 · Red Hat rating Important
    xstream security update
    • Red Hat Enterprise Linux Client Optional (v. 7) xstream-1.3.1-16.el7_9, xstream-javadoc-1.3.1-16.el7_9
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) xstream-1.3.1-16.el7_9, xstream-javadoc-1.3.1-16.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) xstream-1.3.1-16.el7_9, xstream-javadoc-1.3.1-16.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) xstream-1.3.1-16.el7_9, xstream-javadoc-1.3.1-16.el7_9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat BPM Suite 6AffectedNo fix planned: Out of support scope
Red Hat Integration Camel Quarkus 1AffectedNo fix yet
Red Hat JBoss A-MQ 6AffectedNo fix planned: Out of support scope
Red Hat JBoss BRMS 5AffectedNo fix planned: Out of support scope
Red Hat JBoss BRMS 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Data Grid 7AffectedNo fix planned: Out of support scope
Red Hat JBoss Data Virtualization 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Fuse Service Works 6AffectedNo fix planned: Out of support scope
Red Hat JBoss SOA Platform 5AffectedNo fix planned: Out of support scope
RHDM 7.12.0Fixed RHSA-2022:0297
RHPAM 7.12.0Fixed RHSA-2022:0296
Red Hat Data Grid 8.3.0Fixed RHSA-2022:0520
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2021:3956
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2021:3956
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:3956
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:3956
Red Hat IntegrationFixed RHSA-2021:4918
Red Hat Integration Camel Quarkus 2Fixed RHSA-2021:4767
Not affected: 3 products
  • Red Hat Fuse 7
  • Red Hat OpenShift Container Platform 3.11
  • Red Hat OpenShift Container Platform 4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-39139
  2. 2026-10-03 Alias added: GHSA-64xx-cq4q-mf44
  3. 2026-10-07 CISA SSVC decision points changed

References

Patch 3

Advisory 9

Other 5

  • TI-2021-16530 XStream is vulnerable to a Remote Command Execution attack KEVCVSS 3.1HIGH 8.5
  • TI-2013-05951 Xstream API versions up to 1.4.6 and version 1.4.10, if the security framework has not… CVSS 3.1CRITICAL 9.8
  • TI-2021-04451 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.1
  • TI-2021-04446 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.8
  • TI-2021-04444 XStream is vulnerable to an Arbitrary Code Execution attack CVSS 3.1CRITICAL 9.8
  • TI-2020-16038 Remote Code Execution in XStream CVSS 3.1HIGH 8.8
See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences