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TI-2021-16537 Aliases CVE-2021-39151GHSA-hph2-m3g5-xxv4

XStream is vulnerable to an Arbitrary Code Execution attack

Priority MEDIUM 52CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
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 · CNA. 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. 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 0.04735 91st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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-hph2-m3g5-xxv4
  • 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-hph2-m3g5-xxv4

CPE configurations NVD · 36

CPEVersionsRoleVendor
cpe:2.3:a:xstream:xstream:*:*:*:*:*:*:*:*before 1.4.18VulnerableXStream
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: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: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: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: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: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:17.0.2:*:*:*:*:*:*:*17.0.2VulnerableOracle
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:17.0.2:*:*:*:*:*:*:* Versions 17.0.2 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-hph2-m3g5-xxv4 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-2021-39151
  2. 2026-10-03 Alias added: GHSA-hph2-m3g5-xxv4
  3. 2026-10-07 CISA SSVC decision points changed

References

Exploit 1

Patch 2

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